suppose that a cannonball is shot at some speed from the ground at a certain angle from the horizontal. assuming there is no friction, show that the optimal angle to maximize the distance is 45 degrees. to do this, do a picture. decompose the velocity vector into horizontal and vertical components (in terms of the sine and cosine of and the speed ). then consider the horizontal and vertical positions of the ball separately. for the horizontal position, find the distance traveled in time with constant speed. for the vertical, you need to consider the initial speed and the acceleration of gravity, as in section 4.9.
Answers
The optimal angle to maximize the distance for a cannonball shot from the ground with no friction is 45 degrees.
Let's consider a cannonball shot from the ground at an angle θ from the horizontal with a speed v. We can decompose the initial velocity vector into its horizontal and vertical components.
The horizontal component of the velocity (v_x) is given by:
v_x = v * cos(θ)
The vertical component of the velocity (v_y) is given by:
v_y = v * sin(θ)
For the horizontal position, the cannonball will travel with a constant speed (v_x) horizontally for the entire duration of its flight. The time of flight can be calculated by considering the vertical motion.
In the vertical direction, the ball experiences a downward acceleration due to gravity, which is approximately 9.8 m/s². The initial vertical velocity (v_y) and the acceleration (g) allow us to calculate the time of flight (t) using the following equation:
v_y = g * t
Solving for t:
t = v_y / g
Now, we can find the horizontal distance traveled by the cannonball during the time of flight. The distance traveled (d) is given by the horizontal velocity (v_x) multiplied by the time of flight (t):
d = v_x * t
= (v * cos(θ)) * (v * sin(θ) / g) [substituting v_x and t]
To find the angle θ that maximizes the distance, we need to differentiate the distance equation with respect to θ and set the derivative equal to zero:
d' / dθ = 0
Differentiating the distance equation with respect to θ:
d' / dθ = (v / g) * [(cos(θ))^2 - (sin(θ))^2]
Setting d' / dθ equal to zero:
(v / g) * [(cos(θ))^2 - (sin(θ))^2] = 0
Since (cos(θ))^2 - (sin(θ))^2 = cos(2θ), we have:
(v / g) * cos(2θ) = 0
This equation is satisfied when cos(2θ) = 0. Solving for θ:
2θ = π/2
θ = π/4
Therefore, the optimal angle to maximize the distance is θ = 45 degrees.
The optimal angle to maximize the distance traveled by a cannonball shot from the ground, assuming no friction, is 45 degrees from the horizontal. This means that firing the cannonball at an angle of 45 degrees will result in the maximum horizontal range.
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Related Questions
which unit of electricity measures electrical force and 115 is a common value
Answers
The unit of electricity that measures electrical force is the volt (V). The volt is named after the Italian physicist Alessandro Volta, who is credited with inventing the first battery. It is the SI unit for electric potential difference and electromotive force.
In electrical systems, voltage represents the amount of potential energy per unit charge. It measures the force or pressure that drives electric current through a circuit. When a voltage difference exists between two points in a circuit, it causes the flow of electrons, creating an electric current.
A common value of 115 volts (115 V) refers to the standard voltage level used in many residential and commercial electrical systems. In countries such as the United States, Canada, and Mexico, the standard household voltage is 120 volts (120 V) with a nominal value of 115 V. This voltage level is compatible with most household appliances and devices.
The 115 volts supply is achieved through a distribution network where power is generated at higher voltages and then stepped down through transformers to a lower voltage for consumer use. This lower voltage is safe for most electrical devices and ensures efficient operation while minimizing the risk of electrical shock.
It is important to note that different countries may have different standard voltages. For example, in some European countries, the standard household voltage is 230 volts (230 V). The specific voltage requirements and regulations vary worldwide, and it is essential to adhere to the local electrical standards to ensure safe and reliable electrical installations.
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A steam engine receives steam at 500 K. The engine used a part of this thermal energy for work. Exhausts the rest to a condenser at 250 K. What is the maximum efficiency of this steam engine? *
Answers
The maximum efficiency of the steam engine can be calculated using the formula: Efficiency = (1 - Tc/Th) x 100%. Therefore, the maximum efficiency of this steam engine is 50%, which means that half of the thermal energy received by the engine is used for work, and the other half is exhausted to the condenser.
Where Tc is the temperature of the condenser (250 K) and Th is the temperature of the steam (500 K).
So, Efficiency = (1 - 250/500) x 100% = 50%
To calculate the maximum efficiency of a steam engine, we will use the Carnot efficiency formula, which considers the input and output temperatures.
Step 1: Convert the input and output temperatures to Kelvin, if not already provided.
In this case, the input temperature (hot reservoir) is already given as 500 K, and the output temperature (cold reservoir) is given as 250 K.
Step 2: Apply the Carnot efficiency formula:
Carnot efficiency = 1 - (Tc/Th)
where Tc is the temperature of the cold reservoir, and Th is the temperature of the hot reservoir.
Step 3: Substitute the given values into the formula:
Carnot efficiency = 1 - (250 K / 500 K)
Step 4: Calculate the efficiency:
Carnot efficiency = 1 - (0.5) = 0.5
Step 5: Convert the efficiency to a percentage:
Maximum efficiency = 0.5 * 100% = 50%
So, the maximum efficiency of this steam engine is 50%.
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If I am walking towards the rising sun and turns left, on which side will my shadow be? PLEASE ANSWER BY 11.20 AT 8TH FEB 2020....
Answers
Answer:
The shadow would be on your left side.
Explanation:Give brainliest if this helped :)
Which list of elements will behave similarly in a chemical reaction?
lithium (Li), boron (B), oxygen (O)
lithium (Li), sodium (Na) potassium (K)
sodium (Na), magnesium Mg), lithium (Li)
potassium (K), bromine (Br), krypton (Kr)
Answers
Answer:
I got you. its lithium (Li), sodium (Na) potassium (K)
Explanation:
They are all in the same group of the periodic table just look it up and look at group 1
How does the 2-stroke engine work?
Answers
A two-stroke engine is a type of internal combustion engine that completes a power cycle in just two strokes of the piston instead of four as in a four-stroke engine.
The engine works by first drawing in a mixture of air and fuel into the cylinder through an intake port. As the piston moves upwards, it compresses the mixture, which is then ignited by a spark plug. This ignition causes a rapid combustion of the fuel mixture, generating a high-pressure wave that drives the piston downwards. As the piston moves back up, it expels the exhaust gases through an exhaust port. The cycle then repeats as the piston moves back down to draw in a new mixture of air and fuel. Two-stroke engines are lightweight, powerful, and commonly used in small vehicles like motorcycles, boats, and chainsaws.
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A student wants to study the motion of an object that has a constant acceleration. Which of the following experiments could the student conduct to provide the best situations in which an object has a constant acceleration? Select two answers.
A. Release a ball from rest near Earth’s surface.
B. Release a toy car from rest such that it travels along different looped sections of a track.
C. Launch a water-propelled rocket from rest such that it travels into the air and falls back to Earth’s surface.
D. Release a cart from rest such that it travels down an incline of 40° with respect to the ground.
Answers
Dear student Concept:
The acceleration due to gravity near the earth surface is almost constant and equal to g=9.8m/s2 Here the option A and D ar... More
a free body diagram with 4 force vectors. the first vector is pointing downward labeled f subscript g baseline, the second is pointing right labeled f subscript p baseline. the third is pointing upward labeled f subscript n baseline. the fourth is pointing left labeled f subscript f. the upward vector is equal in length to the downward vector. the right vector is longer than the left. which statements describe the book and the forces acting on it? check all that apply. the forces are balanced. the forces are unbalanced. the net force is zero. the book is at rest. the net force is to the right. the book is moving to the right.
Answers
The book moves towards the right. So the correct answer is Option D.
According to the free body diagram, the upward and downward forces are equal in magnitude as they have the same length of the vector but are directed in opposite direction.So these two components of force nullify each other. The force vectors towards the right side and left side are opposite in direction but are not equal in magnitude. Since the length of the force vector towards the right side is longer in length than that towards the left side, hence they do not nullify each other. The forces are unbalanced and the net force is directed towards the right side. So the book moves towards the right side.
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1. How do you describe the path that the light passes through when it travels?
2. What happens during dispersion of light?
3. What are the different colors of light?
4. Similarly, how are rainbows formed up in the sky?
pls help me if u can
Answers
A:
The white light is divided into its component hues - red, orange, yellow, green, blue, and violet - as it passes through the prism. Dispersion is the splitting of visible light into its many hues.
===========================================================B:
Dispersion is the splitting of visible light into its many hues. Each hue is associated with a certain wave frequency, as stated in the Light and Color unit, and different frequencies of light waves bend at different rates while passing through a prism.
============================================================C:
The white light is divided into its component hues - red, orange, yellow, green, blue, and violet - as it passes through the prism. Dispersion is the splitting of visible light into its many hues.
===========================================================D:
The sun and the weather combine to create a rainbow. As it passes from air to denser water, light enters a water droplet, slowing and bending. The light bounces off the interior of the droplet, separating the wavelengths—or colors—that make up the droplet. A rainbow is created as light escapes the droplet.
e. Observe: notice or perceive
f. Infer:
g. Repetition:
h. Replication:
i. Data
Answers
The synonym of a word( observe, infer, repetition, replication and data) means another word that is nearest in meaning to the given word.
The synonym of the words given from the question is given below:
Observe: This means to notice or perceive something. Therefore the synonym is notice or perceive.Infer: This means to conclude something based on evidence and not from explicit statements. Therefore the synonym is deduce or conclude.Repetition: This means doing or saying something again. Therefore the synonym is recurrence.Replication: This means the process of reproduction. Therefore the synonym is duplicate.Data: This means information that is used to make decisions. The synonym is facts.Therefore, synonym of a word means another word that is nearest in meaning to the given word.
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Incident Information
Last Tuesday evening, while cooking the food, Mr Alex Wilson, A chef ,got his hand caught by the fire and burned himself since he wasn't wearing any gloves. He didn’t suffer significant injuries and was given first aid immediately and taken to the hospital for further treatment.
This investigation includes the data collected last Tuesday evening from an accident seen in the kitchen area that involves one worker. The team found that the inability of the worker to comply with the safety procedures of the company resulted in the incident. Recommendations include introducing stricter safety guidelines to be followed ,especially in order to prevent injuries while wearing personal protective equipment in the workplace.
Objective :
During the investigation ,the team obtained the required objectives :
1- Determine the accident’s root cause.
2- Identify the reasons that caused the accident to occur.
3- Build a method that would avoid similar incidents from occurring in the future.
Over interviews with Mr Wilson’s colleagues in the kitchen , the HR department collected enough data that will be used in regards to the incident. Copies of the safety procedures currently practised by the kitchen staff were also obtained by the team for the investigation.
If you were a part of that investigative team,what would be your findings?
Observation:
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Methodology
________________________________________________________________________________________________________________________________________________________________________________________________________________________
Findings
________________________________________________________________________________________________________________________________________________________________________________________________________________________
Conclusion
________________________________________________________________________________________________________________________________________________________________________________________________________________________
Suggestion
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Answers
Observation:
- Mr. Wilson was not wearing gloves while cooking, which is a violation of the company's safety procedures.
- The incident occurred because of the worker's inability to comply with the safety procedures.
- There is a need for stricter safety guidelines and enforcement of personal protective equipment usage in the workplace.
Methodology:
- The team also obtained copies of the safety procedures currently practiced by the kitchen staff for further analysis.
Findings:
- The root cause of the accident was the worker's failure to follow the company's safety procedures, specifically the requirement to wear gloves while cooking.
- The reasons for the accident include a lack of awareness about the importance of wearing gloves and a lack of enforcement of the safety procedures.
Conclusion:
- The incident could have been prevented if the worker had followed the company's safety procedures and worn gloves while cooking.
- There is a need for stricter safety guidelines and enforcement of personal protective equipment usage in the workplace to prevent similar incidents from occurring in the future.
Suggestion:
- The company should implement stricter safety guidelines and conduct regular training sessions for employees to reinforce the importance of following safety procedures.
- The company should also enforce the usage of personal protective equipment in the workplace and hold employees accountable for any violations.
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A van moves 100 km in 2 1/2 hours.
What is its average speed in kilometers
per hour?
Answers
Answer:
0.40km/h
I think.. Hope this helps <3
Question 2 of 10
A car with a mass of 2,000 kg travels a distance of 400 m as it moves from
one stoplight to the next. At its fastest, the car travels at 18 m/s. What is its
kinetic energy at this point?
A. 648,000 J
B. 18,000 J
C. 1,620 J
D. 324,000 J
Answers
Answer:
D
Explanation:
I just did it on apex
a rock group is playing in a bar. sound emerging from the door spreads uniformly in all directions. the intensity level of the music is 107 db at a distance of 7.97 m from the door. at what distance is the music just barely audible to a person with a normal threshold of hearing? disregard absorption. answer in units of m.
Answers
The music is just barely audible at a distance of approximately 0.081 m from the door.
We can use the inverse square law for sound intensity to solve this problem. The inverse square law states that the intensity of sound decreases as the square of the distance from the source increases. Mathematically, we can express this as:
I1/I2 = (r2/r1)^2
where I1 and I2 are the intensities of the sound at distances r1 and r2 from the source, respectively.
We can rearrange this equation to solve for r2:
r2 = sqrt(I2/I1) * r1
To find the distance at which the music is just barely audible, we need to find the intensity level of sound that corresponds to the threshold of hearing. The threshold of hearing is typically around 0 dB, but we'll use a slightly higher value of 10 dB to account for some background noise in the bar.
Using the equation above, we get:
r2 = sqrt(10^((10-107)/10)) * 7.97
r2 ≈ 0.081 m
Therefore, the music is just barely audible at a distance of approximately 0.081 m from the door.
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The Hertzsprung-Russell diagram plots
stars according to what three stellar
properties?
Answers
The Hertzsprung-Russell diagram plots stars according to: the colour of stars (or spectral type) against their absolute magnitude (the observational HR diagram, also known as a colour-magnitude diagram) or the temperature of stars against their luminosity (the theoretical HR diagram).
What is Hertzsprung-Russell diagram ?The Hertzsprung-Russell diagram, also known as the HR diagram, HRD, or H-R diagram, is a scatter plot of stars that illustrates the correlation between the stars' absolute magnitudes or luminosities and their stellar classifications or effective temperatures.
The diagram, which was independently produced in 1911 by Ejnar Hertzsprung and in 1913 by Henry Norris Russell, marked a significant advancement in our understanding of star evolution.
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A 15.00 cm long solenoid with radius 2.50 cm is closely wound with 600 turns of wire. The current in the windings is 8.00 A. What is the magnetic field at a point near the center of the solenoid?
A) 4.80 T
B) 0.006 T
C) 0.4020 T
D) 0.0402 T
Answers
The magnetic field at a point near the center of the solenoid can be calculated using the formula B = μ₀ * n * I, where μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current in the windings.
First, we need to find the number of turns per unit length, which can be calculated by dividing the total number of turns by the length of the solenoid.
n = 600 / 15.00 cm = 40 turns/cm
Next, we need to convert the radius of the solenoid from centimeters to meters, as the unit for permeability is in Tesla meters per ampere (Tm/A).
r = 2.50 cm = 0.025 m
Now we can plug in the values into the formula: B = μ₀ * n * I
B = (4π * 10^-7 Tm/A) * 40 turns/cm * 8.00 A
B = 0.0402 T
Therefore, the magnetic field at a point near the center of the solenoid is 0.0402 T, which corresponds to option D in the given choices.
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What characteristic of sound is most closely related to its frequency?
A. Quality
B. Amplitude
C. Speed
D. Pitch
Answers
Answer:
The loudness of sound is most closely related to
The pressure within a sound wave determines the loudness of the sound. In this lesson, learn how to calculate the sound pressure level of a sound wave and what this measurement represents.
Explanation:
31. If you slowly lower a 20.0-kg bag of sand 1.20 m
from the trunk of a car to the driveway, how
much work do you do?
Answers
The work done while slowly lowering the 20.0-kg bag of sand 1.20 m from the trunk of a car to the driveway is approximately 235.2 Joules.
To calculate the work done while lowering the bag of sand, we can use the formula:
Work = Force x Distance x cos(theta)
In this scenario, the force is the weight of the bag of sand, the distance is the vertical distance the bag is lowered, and theta is the angle between the force and the displacement. Since the bag is being lowered vertically, theta is 0 degrees, and cos(0) is equal to 1.
Calculate the force:
The force exerted by the bag of sand is equal to its weight. The weight can be calculated using the formula:
Weight = mass x gravitational acceleration
Weight = 20.0 kg x 9.8 m/s^2 (gravitational acceleration)
Weight = 196 N
Calculate the distance:
The distance the bag is lowered is given as 1.20 m.
Calculate the work done:
Using the formula for work:
Work = (196 N) x (1.20 m) x (cos 0°)
Since cos(0°) = 1:
Work = (196 N) x (1.20 m) x (1)
Work = 235.2 Joules
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you are playing miniature golf at the golf course shown in figure p2.51. due to the fake plastic grass, the ball decelerates at 1.0 m/s2 when rolling horizontally and at 6.0 m/s2 on the slope. what is the slowest speed with which the ball can leave your golf club if you wish to make a hole in one?
Answers
The correct answer to what is the slowest speed with which the ball can leave your golf club if you wish to make a hole in one is 2.9 m/s.
To make a hole in one, the ball must have enough speed to reach the hole. The slowest speed that the ball can leave the golf club is the minimum speed required to reach the hole. We can use the equations of motion to find the minimum speed required.
First, let's find the time it takes for the ball to reach the slope. The distance from the golf club to the slope is 2.0 m, and the deceleration is 1.0 m/s^2. Using the equation d = v_0*t - (1/2)*a*t^2, we can solve for t:
2.0 = v_0*t - (1/2)*1.0*t^2
Rearranging and using the quadratic formula, we get:
t = (v_0 ± √(v_0^2 - 4*(1/2)*(-2.0)))/(2*(1/2))
t = (v_0 ± √(v_0^2 + 4.0))/1.0
Since we are looking for the minimum speed, we will use the smaller value of t:
t = (v_0 - √(v_0^2 + 4.0))/1.0
Next, we can find the time it takes for the ball to reach the hole on the slope. The distance on the slope is 1.5 m, and the deceleration is 6.0 m/s^2. Using the same equation of motion, we can solve for t:
1.5 = v_0*t - (1/2)*6.0*t^2
Rearranging and using the quadratic formula, we get:
t = (v_0 ± √(v_0^2 - 4*(1/2)*(-1.5)*6.0))/(2*(1/2)*6.0)
t = (v_0 ± √(v_0^2 + 18.0))/6.0
Again, we will use the smaller value of t:
t = (v_0 - √(v_0^2 + 18.0))/6.0
Now we can set the two values of t equal to each other and solve for v_0:
(v_0 - √(v_0^2 + 4.0))/1.0 = (v_0 - √(v_0^2 + 18.0))/6.0
Cross-multiplying and rearranging, we get:
5.0*v_0 = √(v_0^2 + 18.0) - √(v_0^2 + 4.0)
Squaring both sides and simplifying, we get:
v_0^2 - 10.0*v_0 + 14.0 = 0
Using the quadratic formula, we get:
v_0 = (10.0 ± √(10.0^2 - 4*1.0*14.0))/(2*1.0)
v_0 = (10.0 ± √(100.0 - 56.0))/2.0
v_0 = (10.0 ± √44.0)/2.0
Again, we will use the smaller value of v_0:
v_0 = (10.0 - √44.0)/2.0
v_0 ≈ 2.9 m/s
Therefore, the slowest speed with which the ball can leave the golf club is 2.9 m/s.
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1) When a gas expands adiabatically,
A) the internal (thermal) energy of the gas decreases.
B) the internal (thermal) energy of the gas increases.
C) it does no work.
D) work is done on the gas.
E) the temperature of the gas remains constant.
Answers
When a gas expands adiabatically, its internal energy decreases and work is done on the gas.
Adiabatic expansion occurs when a gas expands without any heat exchange with the surroundings.
As a result, the internal energy of the gas decreases because the gas does work on the surroundings.
This means that option A is correct, and the internal (thermal) energy of the gas decreases.
Option B is incorrect since the gas is doing work on the surroundings and therefore loses internal energy.
Option C is incorrect because work is done on the gas by the surroundings.
Option D is correct since work is done on the gas.
Finally, option E is incorrect because the temperature of the gas decreases as its internal energy decreases due to the expansion.
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Can anyone tell me why my answer is wrong and what is the right one please (only for the second one)
Answers
The correct response is D. 700 kilometers.
What is velocity?The pace at which an object changes its position is referred to as its velocity, which is a physical term. Being a vector quantity with both magnitude (speed) and direction, velocity has both.
The displacement of an object divided by the amount of time needed to cover that distance yields the velocity. The term "displacement" describes a shift in an object's location in a certain direction.
How do you determine it?We can apply the following formula to resolve this issue:
Distance = velocity x time
where distance is the length of time the ship travels, velocity is the ship's speed, and time is its travel time.
The ship is moving at a speed of 50 km/h southeast, which is 45 degrees southeast of the east-west axis, according to the information we have about its velocity.
The following calculation can be used to determine how far the ship traveled during a 14-hour period:
Distance= 50 km/hr x 14 hr = 700 km.
The correct response is D. 700 kilometers.
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describe how the *weight* of a spacecraft would compare between when it was on earth and when it was on the moon.
describe how the *mass* of a spacecraft would compare between when it was on earth and when it was on the moon
Answers
Answer:
The mass of a spacecraft is the same on earth as the moon.
W = F = M a the weight is different because the acceleration due to gravity is less on the moon than it is on earth.
On could choose a different mode of acceleration, say a compressed spring, and find that mass of an object does not depend on gravitational attraction. F = M a holds on the moon as well as on earth
consider a photon of light. write the equation that links the maximum electric field (emax) and the maximum magnetic field (bmax). (1pt)
Answers
Answer is approximately 3.00 x \(10^8\) meters per second.
The equation that links the maximum electric field (Emax) and the maximum magnetic field (Bmax) of a photon of light is given by:
Emax = c * Bmax
where:
- Emax is the maximum electric field amplitude,
- Bmax is the maximum magnetic field amplitude,
- c is the speed of light in vacuum.
According to Maxwell's equations, in a vacuum, the electric and magnetic fields in an electromagnetic wave, such as a photon, are related to each other by the speed of light (c), which is approximately 3.00 x\(10^8\) meters per second. The equation above expresses this relationship, stating that the maximum electric field amplitude is equal to the speed of light multiplied by the maximum magnetic field amplitude.
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2. The potential energy of an object depends on its _______.
Answers
Answer:
homboy it Position
Explanation:
Answer: i think position
Explanation:just thinking
The amount of variation in the tilt of earth's axis is due to the gravitational effect of which body?
Answers
The amount of variation in the tilt of the earth's axis is due to the gravitational force of the Moon
According to the Law of Universal Gravitation force, a force that attracts one particle to another is directly proportional to the product of the two masses and inversely proportional to the square of their distance from one another.
The gravitational force is caused by the gravitational pull of two objects on one another is stronger the more mass they have and the closer they are to one another. The energy holding the gases inside the sun. the power behind a ball's descent after being thrown into the air. the force that makes an automobile coast downhill even when the gas is not depressed. the force behind a glass you dropped falling
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mr. singer's class wonders why the united states is colder in the winter, since the earth is closer to the sun at that time. mr. singer proposes that they design experiments to investigate the relationship between the angle of the sunlight and temperature on earth. he divides his students into lab groups and sets out globes, lamps, and thermometers. before they can use the equipment, however, each lab group first designs their experiment. which of the following should students identify in their experimental design?
Answers
The students should identify the independent variable, dependent variable, and control variables in their experimental design.
Which variable should be identified in their experimental design?Independent variable: The variable that is deliberately changed or manipulated by the students. In this case, the students may manipulate the angle of the sunlight by adjusting the position of the lamp.
Dependent variable: The variable that is measured by the students. In this case, the dependent variable is the temperature on Earth, which can be measured using the thermometer.
Control variables: The variables that are kept constant throughout the experiment to ensure that only the independent variable is affecting the dependent variable. In this case, the students should control variables such as the distance between the lamp and the globe, the type of lamp used, and the initial temperature of the globe.
Additionally, the students should also identify the hypothesis they are testing, the procedures they will follow to manipulate the independent variable, and the data analysis methods they will use to analyze their results.
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a chef fills 50ml container with 43.5 g of cooking oil. what is the density of the oil?
Answers
Answer:
0.87 g per ml
Explanation:
D=M/V
43.5/50=0.87
With all of the electric wires and current running through your house, what direction would a compass point if you were standing in the middle of your room? Why is this? What property of magnetic fields does this demonstrate, and how would the magnetic field lines look in this region?
Answers
1) The direction it points depends on the direction of the electric current in the wires.
2) The magnetic field lines in the region would form circles around each individual wire carrying current.
3) This is because of the right-hand rule
Where does the current point?The magnetic field produced by the electric current forms a circular magnetic field around the wire in accordance with the right-hand rule, which is applicable to conventional current flow.
The current's flow direction determines the direction of the magnetic field lines. The curled fingers of your right hand, which is holding the wire with your thumb pointing in the direction of the current flow, would point in the direction of the magnetic field.
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the howler monkey is the loudest land animal and can be heard up to a distance of 9.8 km. assume the acoustic output of a howler to be uniform in all directions. the distance at which the intensity level of a howler's call is 25 db, in si units, is closest to:
Answers
In S.I units, the distance at which the intensity level of a howler's call is 25 DB is closest to 551m.
What is meant by intensity level?A sound wave's intensity is measured in decibels (dB) and is based on logarithms with base 10. The sound intensity increases by a factor of ten for every 10 dB increase in intensity level.
The power per unit area carried by a wave Sound intensity level: a unitless quantity indicating the level of sound in relation to a specified standard. The ratio of the pressure amplitude to a reference pressure is referred to as the sound pressure level.
The distance at the hearing threshold is 9.8km.
As a result, the intensity, I1=1012 W/m2 for a distance r1=9.8km
As a result, the intensity level for 25DB is determined as 25DB=10 log(I2/1012).
As a result, I2=3.1621010 W/m2.
The distance at which the intensity level is 25DB is calculated using I1/I2=(r1/r2)2 or r2=[r12(l1/l2)].
=√[(9.8×10³)²×(10⁻¹²/3.162×10⁻¹⁰)]
=551m
In S.I units, the distance at which the intensity level of a howler's call is 25 DB is closest to 551m.
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What effect did the virus have on Frank initially in the movie Osmosis Jones
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Answer: But with that germ-ridden egg comes a mortal danger: Osmosis discovers Frank has really contracted a villainous and black-hearted deadly virus known as Thrax who arrives and is plotting to ultimately overheat Frank's body, killing him from the inside out!
3. How do energy transformations, energy transfers, and conservation of energy allows you to track how energy moves through in a system?
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Answer:
The law of conservation of energy states that when one form of energy is transformed to another, no energy is destroyed in the process. According to the law of conservation of energy, energy cannot be created or destroyed. So the total amount of energy is the same before and after any transformation
Explanation:
The energy in a system always transforms from one form to another without any significant loss or addition. It simply changes from one form to another with the effect of numerous external influences.
What is Energy transformation?Energy transformation may be defined as the process through which energy can convert from one form to another. It also illustrates the migration of energy from one place to another due to physical factors.
According to the law of conservation of energy, in a closed system energy can neither be created nor destroyed. The total amount of energy remains the same before and after the process of transformation.
Therefore, the energy in a system always transforms from one form to another without any significant loss or addition.
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