Answers
At 3s we can see the slope is 0, so that means his acceleration is zero. That means he was moving at a constant velocity
At 5s we can see that the slope is negative. And from 5s to 6s the change in velocity is -5m/s^2
At 7s we can see the slope is very positive. And from 7s to 8s the change in velocity is +15m/s^2
And again, at 9s the slope is 0 so his acceleration is also zero. He’s moving at a constant velocity
If you take the integral of a velocity vs time graph, you get position. So the area underneath a velocity vs time graph is the distance traveled. Anything below the x axis is considered negative distance. We need to take the area of a triangle and the area of two rectangles to find the distance.
So, let’s do the two rectangles first. From 8s to 9s it is a width of 1 and a length of 40. So the area would be 40 meters. Let’s do the second rectangle. From 7s to 8s it is a width of 1. Then the length goes up to 25. So the area is 25 meters.
Now the triangle, the base is 1 and the height is 15. Divide 15 in half to get 7.5 meters
25 + 40 + 7.5 = 72.5 meters
Related Questions
Minion fighter planes are launched from aircraft carriers with the aid of their own engines and a catapult. if in the process of being launched from rest, the thrust of a jet's engines is 2.10 105 n and after moving a distance of 90 m the plane lifts off with a kinetic energy of 4.70 107 j, what is the work done (in j) on the jet by the catapult?
Answers
Work done on the jet by the catapult is 3.31x10⁷j
We are given that,
Thrust = F = 2.10105N
As a result, the work performed by the engines and the catapult will be equal to the kinetic energy of the jet at takeoff. then the formula can be used to determine the work the jet did.
Work done by the engines = Force x Distance
Work done by the engines,
(2.10 X 10⁵J)x 90m = 1.89 x 10⁷J
Total kinetic energy = 5.20x 10⁷J
The total kinetic energy minus the work produced by the engines is the amount of work the catapult does on the jet.
Therefore the
work done on the jet by the catapult =( 5.20 X 10⁷J) -(1.89 X 10⁷) work done on the jet by the catapult = 3.31x10⁷j
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Part 1 - Velocity Position versus Time (x vs t) graph for Object 1 x versust-Object 1 y 1.2754x+ 0.0187 x (m) Linear (x (m)) 0 Position versus Time (x vs t) graph for Object 2 x versus t-Object 2 4.5 y 0.7249x+ 0.0513 3.5 E 2.5 Linear (x (m) 1.5 0.5 Position versus Time (x vs t) graph for Both Objects x versust-Objects 1 and 2 10 1.2754x+0.018 0.7249x+0 x2 (m)." Linear (xl (m) Linear(2 (m) xd (m) Part 2-Acceleration Position versus Time (x vs t) graph for Object 3 x versus t-Object 3 45 35 E 25 x 20 15 10 x (m) 10 5 15 20 25 30 Position versus Time squared (x vs t2) graph for Object 3 x versus t2 -Object 3 45 y:0.0628x +0.3243 40 35 30 25 x 20 15 10 x(m) Linear ((m)) 0 t2 (s2) Analysis Part 1 1) What are the slopes for Object 1 and Object 2? The slope for object one is 1.2754 m/s. The slope for object two is 0.7249 m/s 2) What does the fact that the plots are linear tell us about the velocity of these objects? The fact that the plots are linear shows us that the velocity is constant. In the case of this graph the average velocity is the slope and it is positive and constant. 3) Which of the two objects was traveling faster? Explain your reasoning. Object 1 was traveling faster because it had a larger change in slope. The slope is change in position (x) over time. This shows that the numerator, which is x, is greater and therefore the object travels faster. You can also tell by looking at the graph and seeing that it is steeper.
Answers
Object 1 was travelling faster than Object 2, as it had a larger slope on the velocity versus time graph.
Object 1 and Object 2 have different slopes on the velocity versus time (x vs t) graph, indicating that the two objects had different velocities. The slope of Object 1 is 1.2754 m/s and the slope of Object 2 is 0.7249 m/s.
The fact that the plots are linear tells us that the velocity of both objects is constant.
The average velocity for each object can be determined by the slope of the line, which is the change in position (x) divided by the change in time. Therefore, the larger the slope, the greater the velocity.
From this, we can determine that Object 1 was travelling faster because it had a larger slope, indicating a larger change in position (x) over time, compared to Object 2.
The Position versus Time squared (x vs t2) graph for Object 3 shows that the acceleration is constant because the graph is linear. The slope of this line is 0.0628 m/s2, which is the average acceleration of the object.
The acceleration is determined by the change in velocity over time, which can be calculated from the change in the slope. From this, we can see that the acceleration of Object 3 is constant.
Overall, the three graphs indicate that the velocity and acceleration of these objects is constant.
The velocity of each object can be determined by the slope of the velocity versus time graph, and the acceleration can be determined by the slope of the position versus time squared graph.
Object 1 was travelling faster than Object 2, as it had a larger slope on the velocity versus time graph.
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A hypothesis is a(n) ______________, while a theory is a(n) ______________.
Answers
A theory is a well-supported explanation of observations.
what matches ????????????????
Answers
Answer:
1st: Radiation
2nd: Conduction
3rd: Convection
Explanation:
I actually learned this before in school. Yay
A ball with a momentum of 16 kg.M/s strikes a ball at rest. What is the total momentum of both the balls after the collision.
Answers
Answer:
Total momentum = 16 Kgm/s
Explanation:
Let the momentum of the two balls be A and B respectively.
Momentum A = 16 kgm/s
Momentum B = 0 kgm/s (since the ball is at rest).
Total momentum = A + B
Total momentum = 16 + 0
Total momentum = 16 Kgm/s
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
\( Momentum = mass * velocity \)
Total momentum of both the balls after the collision is 16 Kg.m/s
Given:
Momentum= 16 kg.m/s
To find:
Total momentum of both the balls after the collision.
What is momentum?
Momentum can be defined as the product of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity since it has both magnitude and direction.It is given as: \(\text{P}=\text{m*v}\) where m= mass and v=velocity of an object.Consider the momentum of the two balls be A and B respectively.
Momentum A = 16 kg.m/s
Momentum B = 0 kg.m/s (since the ball is at rest).
Total momentum = A + B
⇒ 16 + 0
Total momentum= 16 kg.m/s
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The magnitude and direction exerted by two tugboats towing a ship are 1670 kilograms, N35°W, and 1250 kilograms, S60°W, respectively. Find the magnitude, inkilograms, and the direction angle, in degrees, of the resultant force.
Answers
The magnitude of the resultant force is 2661 kilograms, and its direction angle is 29.31°.
Let A = 1670 kilograms, N35°W and B = 1250 kilograms, S60°W, the resultant R of the two forces A and B can be determined using the parallelogram law of vector addition. The parallelogram law of vector addition states that:
In order to add two vectors A and B, you draw them to scale on a graph, put the tail of B at the head of A, then draw a vector from the tail of A to the head of B. This vector represents the resultant R.
The magnitude of R is given by the formula:
R = sqrt(A² + B² + 2AB cosθ)Where θ is the angle between A and B.Note that cosθ is positive if θ is acute (0° < θ < 90°), and cosθ is negative if θ is obtuse (90° < θ < 180°).
The direction angle of R is given by the formula:
tanθ = (B sinα - A sinβ) / (A cosβ - B cosα)where α and β are the angles A and B make with the horizontal axis, respectively.
α = 270° - 35° = 235°
β = 240°sinα = sin(235°) = - 0.819sin
β = sin(240°) = - 0.342
cosα = cos(235°) = - 0.574cos
β = cos(240°) = - 0.940
Now, substituting these values in the formula above:
tanθ = (1250(-0.342) - 1670(-0.819)
(1670(-0.574) - 1250(-0.940))= - 1042.2
1922.9= - 0.542θ = tan-1(0.542)θ = 29.31°
A points N35°W and B point S60°W, the angle between them is:
360° - 35° - 60° = 265°.Now, we can compute the magnitude of R:
R = sqrt(A² + B² + 2AB cosθ)= sqrt(1670² + 1250² + 2(1670)(1250)cos(29.31°))= 2661 kilograms.
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A +1.0 μC point charge is moved from point A to B in the uniform electric field as shown. Which one of the following statements is necessarily true concerning the potential energy of the point charge? a) The potential energy increases by 10.8 × 10-6 J. b) The potential energy decreases by 10.8 × 10-6 J. c) The potential energy decreases by 6.0 × 10-6 J. d) The potential energy increases by 6.0 × 10-6J. e) The potential energy decreases by 9.0 × 10-6 J.
Answers
Answer:
E = V/d = 120 V/0.06 m = 2000 V/m
Now we can calculate the potential energy of the point charge as it moves from point A to point B:
U = qEΔd = (1.0 × 10^-6 C)(2000 V/m)(0.06 m) = 1.2 × 10^-7 J
Therefore, the potential energy decreases by 1.2 × 10^-7 J as the point charge moves from point A to point B. So, option c) The potential energy decreases by 6.0 × 10^-6 J is necessarily true concerning the potential energy of the point charge
Explanation:
The potential energy of a charged particle in an electric field is the work done by the electric force in moving the charge from a point where the electric field is zero to a point where the electric field is E. The potential energy is given by the equation: U = qE where q is the charge of the particle and E is the electric field
A sound wave travelling in water has a frequency of 100 Hz. The speed of sound in water is 1482 m/s. Calculate the wavelength of the wave
Answers
λ = v/f
λ = 1482/100
Answer:
λ = 14.82 m
An object’s speed is a measure of....
Answers
Answer:
units?
Explanation:
i think that what it is if i remeber
A +5.0 x 10-6 C charge and a -6.0 x 10-6 C charge experience an attractive force
of -0.72 N ("-" means attractive).
Determine their separation distance in meters.
Answers
To determine the separation distance between the charges, we can use Coulomb's Law, which states that the force between two charged objects is proportional to the product of their charges and inversely proportional to the square of the distance between them. The formula for Coulomb's Law is:
F = k * (|q1| * |q2|) / r^2
Where:
F is the force between the charges,
k is the electrostatic constant (k ≈ 9 x 10^9 Nm^2/C^2),
|q1| and |q2| are the magnitudes of the charges,
r is the separation distance between the charges.
Given:
|q1| = 5.0 x 10^-6 C,
|q2| = 6.0 x 10^-6 C,
F = -0.72 N.
Rearranging the formula, we can solve for the separation distance (r):
r = √(k * (|q1| * |q2|) / F)
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When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, therefore, slows him down. The mass of the sky diver is 82 kg and the drag force has a magnitude of 850 n. What are the magnitude and direction of his acceleration.
Answers
The force of gravity is pulling the skydiver downward, while the drag force of the parachute is acting upward. Initially, the upward force of the parachute is greater than the force of gravity, so the acceleration is upward. Therefore, the direction of the acceleration is upward.
What is Acceleration?
Acceleration is a physical quantity that describes the rate at which an object changes its velocity. It is defined as the rate of change of velocity with respect to time, and is usually expressed in units of meters per second squared (m//\(s^{2}\).). An object can accelerate if it changes its speed, its direction of motion, or both. If the object's speed increases, it is said to have positive acceleration; if the speed decreases, it is said to have negative acceleration (also called deceleration).
To find the magnitude and direction of the skydiver's acceleration, we can use Newton's Second Law of Motion:
Force = Mass x Acceleration
Rearranging the formula to solve for acceleration:
Acceleration = Force / Mass
Substituting the given values:
Acceleration = 850 N / 82 kg
Acceleration = 10.37 m//\(s^{2}\).
So the magnitude of the skydiver's acceleration is 10.37 m/\(s^{2}\).
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The bearing of grids of an AB alignment is 100º 22', while the magnetic declination is 8º30' E. What are the true azimuth, magnetic azimuth, and grid azimuth of this alignment?
Answers
The true azimuth of the AB alignment is 91º 52' (east of north), the magnetic azimuth is 100º 22' (east of north), and the grid azimuth is 108º 52' (east of north).
To find the true azimuth, magnetic azimuth, and grid azimuth of the AB alignment, we need to consider the magnetic declination. The magnetic declination indicates the angle between true north and magnetic north at a specific location. In this case, the magnetic declination is 8º 30' E, which means that the magnetic north is 8º 30' east of the true north.
To calculate the true azimuth, we subtract the magnetic declination from the grid azimuth. The grid azimuth is given as 100º 22', so subtracting the magnetic declination of 8º 30' E gives us a true azimuth of 91º 52' (east of north).
The magnetic azimuth remains the same as the grid azimuth, which is 100º 22' (east of north).
The grid azimuth is calculated by adding the magnetic declination to the true azimuth. Since the magnetic declination is east, we add it to the true azimuth. Adding 8º 30' E to the true azimuth of 91º 52' gives us a grid azimuth of 108º 52' (east of north).
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What are your thoughts on alternative energy sources for
transportation (such as electric and hydrogen)?
Answers
Electric and hydrogen are promising alternative energy sources for transportation, offering benefits such as reduced emissions and lower operating costs, although they also face challenges related to infrastructure and production methods.
Electric and hydrogen are two promising alternative energy sources for transportation that have gained significant attention in recent years. Here are some key points about each:
Electric Vehicles (EVs): EVs use electricity stored in batteries to power an electric motor.
They offer several advantages, including zero tailpipe emissions, reduced dependence on fossil fuels, and lower operating costs compared to traditional internal combustion engine vehicles.
The growth of EV infrastructure and advancements in battery technology have contributed to their increasing popularity.
Hydrogen Fuel Cell Vehicles (FCVs): FCVs use hydrogen gas to generate electricity through a chemical reaction in a fuel cell, which then powers an electric motor. FCVs produce zero tailpipe emissions since the only byproduct is water vapor.
Hydrogen fuel can be refueled quickly, similar to traditional gasoline vehicles, providing a longer driving range compared to battery-powered EVs.
Both electric and hydrogen vehicles have their own set of challenges. For EVs, limited charging infrastructure and range anxiety remain concerns, although they have been improving over time.
Hydrogen FCVs face challenges related to hydrogen production, storage, and distribution infrastructure.
Additionally, the overall environmental impact of these alternative energy sources depends on the methods used for electricity or hydrogen production.
The adoption of alternative energy sources for transportation is a complex and evolving field.
It often involves a combination of technological advancements, policy support, and infrastructure development to enable widespread adoption and address existing challenges.
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Within a musculoskeletal lever system, what is the fulcrum?
Answers
"Within a musculoskeletal lever system, the fulcrum is said to be the joint."
The bodily components that act as levers to produce human action are bones, ligaments, and muscles. To move a weight or resistance, a joint serves as the axis, and muscles that cross the joint provide the power.
Bones serve as lever arms in our bodies, joints serve as pivots, and muscles supply the power needed to move loads. Lever arms, pivots, efforts, and loads are the four components of a lever.
In the human body, the lever is a bone, and the fulcrum is a joint that allows a bone to rotate around it. Muscles supply the effort force, which is transferred to the lever system at the location where the muscle tendon connects to the lever bone.
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5. A 200 m long aluminum wire has the same resistance and cross-sectional area as a carbon wire. What is
the length of the carbon wire?
Answers
Answer:
=0.15m
Explanation:
l
C
=l
Al
ρ
C
ρ
Al
=200∗
3.5∗10
−5
2.65∗10
−8
A 77.0 kg woman slides down a
42.6 m long waterslide inclined at
42.3º. At the bottom, she is
moving 20.3 m/s. How much work
did friction do on the woman?
(Unit = J)
(Hint: Her starting height is NOT 42.6 m.)
Answers
Assuming the woman starts at rest, she descends the slide with acceleration a such that
(20.3 m/s)² = 2 a (42.6 m) → a ≈ 4.84 m/s²
which points parallel to the slide.
The only forces acting on her, parallel to the slide, are
• the parallel component of her weight, w (//)
• friction, f, opposing her descent and pointing up the slide
Take the downward sliding direction to be positive. By Newton's second law, the net force in the parallel direction acting on the woman is
∑ F (//) = w (//) - f = ma
where m = 77.0 kg is the woman's mass.
Solve for f :
mg sin(42.3°) - f = ma
f = m (g sin(42.3°) - a)
f = (77.0 kg) ((9.80 m/s²) sin(42.3°) - 4.84 m/s²) ≈ 135 N
Compute the work W done by friction: multiply the magnitude of the friction by the length of the slide.
W = (135 N) (42.6 m) ≈ 5770 N•m = 5770 J
Answer:
-5770 J
Explanation:
look above this lol
!PLEASE HELP! 35 POINTS!
Answer the following questions in complete sentences.
A student secures a picture frame to a wall using a screw.
Part A: In terms of force, direction, and distance, explain how the screw makes the student's work easier.
Part B: Describe a change to this screw design that would make this student’s work even easier.
Answers
Answer:
Explanation:
A: Screws are a simple machine that make doing work easier.
Work = W = Fd
F = W/d
So by increasing distance (d), you decrease the amount Force needed to do the work.
By applying a small rotational force (circular direction) on the screw, the axial force is amplified. It takes less force to turn a screw around than to drive a nail straight into the wall.
B: To make the job even easier, choose a screw with a "finer" thread. The smaller the pitch (the distance between the screw's threads), the greater the mechanical advantage (the ratio of output to input force).
Part A: The screw makes the student's work easier by providing a force that is directed downwards into the wall, allowing the student to secure the picture frame in place with a relatively small distance of travel.
What is force?Force is a physical quantity that is defined as the product of mass and acceleration. It is a vector quantity, meaning it has both magnitude and direction. Force is one of the fundamental concepts of physics and is responsible for the motion of objects. It is also responsible for the interaction between objects, such as the force of gravity that keeps the planets in orbit around the sun. Force can be applied to objects in order to cause them to move, accelerate, decelerate, or change direction. Force can also be used to do work, such as lifting a weight or pushing a car. Force is an important concept in physics and is used to explain many phenomena in the natural world.
Part B: A change to the screw design that would make the student's work even easier would be to use a self-tapping screw, which has a sharp point that allows it to cut its own thread into the wall, eliminating the need to pre-drill a hole. This would reduce the amount of effort required to secure the picture frame to the wall.
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what is the magnitude of the torque that the axle must apply to prevent the disk from rotating?
Answers
The required torque at the axle, is given by the difference between the
moments of the applied forces.
The torque required is 19.62 N·m counterclockwise
Reasons:
The given parameters are;
Mass of the disk, m = 5.0 kg
Location of the axle = Half the radius of the disk
Diameter of the disk, D = 40 cm = 0.4 m
Applied mass, 0.1 m from the axle = 15 kg
Applied mass, 0.3 m from the axle = 10 kg
Required:
Magnitude of torque at the axle that prevent the disk from rotating
Solution:
Torque needed = Clockwise moment - Counterclockwise moment
Clockwise moment = (10 kg × 0.3 m + 5 kg × 0.1 m) × 9.81 m/s² = 34.335 N·m
Counterclockwise moment = 15 kg × 0.1 m × 9.81 m/s² = 14.715 N·m
τ + Counterclockwise moment = Clockwise moment
τ + 14.715 N·m = 34.335 N·m
Torque required, τ = 34.335 N·m - 14.715 N·m = 19.62 N·m
Torque required, τ = 19.62 N·m counterclockwise
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The probable question drawing obtained from a similar question online is attached
nfantHeart-RateMeasurementandOxygenDesaturation Detection with a Digital Video Camera Using Imaging Photoplethysmography.
Answers
The study titled "Infant Heart-Rate Measurement and Oxygen Desaturation Detection with a Digital Video Camera Using Imaging Photoplethysmography" focuses on using imaging photoplethysmography with a digital video camera to measure heart rate and detect oxygen desaturation in infants.
The study aims to explore a non-invasive method for monitoring the heart rate and oxygen saturation levels of infants using a digital video camera and imaging photoplethysmography. Photoplethysmography is a technique that measures changes in blood volume by detecting variations in light absorption or reflection.
By utilizing a digital video camera, the researchers capture video recordings of the infant's skin and analyze the subtle changes in color caused by blood flow. These changes provide valuable information about the infant's heart rate and oxygen desaturation levels.
The use of imaging photoplethysmography with a digital video camera has several potential benefits, including its non-invasive nature, convenience, and potential for remote monitoring. This approach eliminates the need for attaching sensors or electrodes to the infant's body, which can be uncomfortable and restrictive.
The study holds promise for applications in neonatal care, where continuous monitoring of vital signs is crucial for early detection of health issues. It may contribute to improving the quality of care and reducing the risk of complications in infants.
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A breaststroke swimmer completes the 100 m (50m up and 50 m back) in a time of 1:20? His average speed was m/s................... His average velocity was m/s..............
Answers
The breaststroke swimmer's average speed was m/s, and his average velocity was 0 m/s.
To calculate the average speed, divide the total distance traveled (100 m) by the total time taken (1 minute and 20 seconds, or 80 seconds). The average speed is the total distance divided by the total time, resulting in the speed in meters per second.
For the breaststroke swimmer, the average speed is determined as:
Average Speed = Total Distance / Total Time
Average Speed = 100 m / 80 s
Average Speed = 1.25 m/s
As for the average velocity, it takes into account both the magnitude and direction of motion. In this case, since the swimmer starts and ends at the same point, his displacement is zero, meaning there is no net change in position. Therefore, the average velocity is zero m/s.
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Newtons and Coulombs Laws QC
(Look to the bottom for answers 100% correct)
1. Which law gives the force between two objects that is related to their mass and distance?
A. Newton's second law of motion
B. Kepler's law
C. Newton's law of gravitation
D. Coulomb's law
2. What is the property that allows a positive proton and a negative electron to feel an attraction between each other?
A. Mass
B. Weight
C. Charge
D. Spin
3. In which case would there be an electrostatic force between two objects?
A. Two positively charged objects
B. A negatively charged object and a neutral object
C. A positively charged object and a neutral charged objects
D. Two neutral objects
4. Which statement is correct about electrostatic force?
A. It can have a positive or negative value
B. It is only observed between two electrons
C. It depends on the mass if the charges
D. It is independent of the distance between charges
5. In the simulation, two charges are both set to +4 uC. Then one of the charges is charged to -4 uC. Which statement describes the situation?
A. The electrostatic force is originally repulsive and stays repulsive.
B. The electrostatic force is originally attractive and stays attractive.
C. The electrostatic force changes from attractive to repulsive.
D. The electrostatic force changes from repulsive to attractive.
Answers:
1. C
2. C
3. A
4. A
5. D
BE SURE TO CHECK THE ORDER OF YOUR ANSWER CHOICES BECAUSE THEY CAN CHANGE.
100% is guaranteed
Answers
1c 2c 3a 4a 5d
Explanation:
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destructive interference occurs when a. waves combine to form a larger wave b. waves don't combine at all c. waves combine to form a smaller wave d. waves combine but don't change amplitude
Answers
Destructive interference occurs when option (c) waves combine to form a smaller wave.
Destructive interference is a phenomenon in which two or more waves interact and their amplitudes combine in such a way that they cancel each other out, resulting in a smaller overall amplitude. This can occur when the peak of one wave aligns with the trough of another wave, causing them to effectively cancel each other out.
This contrasts with constructive interference, in which waves combine to form a larger wave as their peaks and troughs align and amplify each other.
It occurs in the following way:
1. Two or more waves with similar frequencies and amplitudes approach each other.
2. The waves overlap and interact, causing their amplitudes to combine.
3. If the peak of one wave aligns with the trough of another wave, their amplitudes will cancel each other out, resulting in a smaller combined amplitude.
4. As the waves continue to propagate, they will eventually move past each other, returning to their original amplitudes.
In conclusion, destructive interference takes place when waves combine in such a way that their amplitudes effectively cancel each other out, leading to a smaller resultant wave.
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A force of 6. 0 Newtons is applied to a block at rest on a horizontal frictionless surface over a 7. 0 meter span. How much energy is gained by the block?
Answers
42 Joules energy is gained by the block. This can be solved by using the concept work done formula.
What is work done?The product of a force and the distance it is applied across is what is referred to as the work done. An item moves across space when a force is applied to it, which is referred to as doing work. By applying a force across a distance, such as when you lift a burden, you are performing labor.
A force delivered over a distance to an item causes work to be done. Thus, an object's total energy will be impacted when a force is applied to it across a distance.
Given that,
a force of 6.0 Newtons is applied to a block at rest on a horizontal friction less surface over a 7.0 meter span.
The parameters given are:
Distance covered = 7.0 m
The force = 6.0 N
The formula for work done is the product of force and distance. That is,
Work done = force × distance
Where work done is the same as energy.
So, Energy = force × distance
or, Energy = 6.0 N × 7.0 m
or, Energy = 42 Joules.
Therefore, the energy gained by the block is 42 Joules.
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How do we determine if a characteristic of life is common to all living things?
Answers
Answer:
We can know if we use scientific knowledge like researching exploring things in your environment
Explanation:
scientific guess also none has hypothesis
1. How is power defined? *
A. the quantity of work accomplished
B. the direction of the force applied to an object
C. the total distance an object is moved
D. the rate at which work is accomplished
Answers
Answer:
D. the rate at which work is accomplished
Please write in complete sentences.
How does density affect refraction?
Diamonds are a very dense material. Predict what would happen to the light ray if you projected it from the air through a diamond.
answer both questions
Answers
(1.) The Phenomena of Refraction Occurs when a Ray (Here Light) enters a Relatively Denser or Rarer Medium and Due to the Change in Density, the Speed of the Incident Ray Decreases or Increases Respectively.
(2.) If a light ray projected through a diamond, the light would refract drastically.
How can you determine if a circuit is a series circuit or parallel circuit
Answers
Answer: A circuit is said to be a parallel circuit if the electrical components are connected in a parallel configuration or their end are connected to a common point. It forms multiple loops or pathways for the current to flow. A circuit is said to be a series circuit if the components are connected in a series configuration or cascaded formation in a single line. A series circuit forms a pathway that has only one loop, therefore, the current flowing through components is the same and the voltage divides depending on the resistance of each component.
Explanation:
which requires the most energy to melt it: 1kg of ice, 1kg of solid lead or 1kg of solid ethanol
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The substance that requires the greatest amount of energy to melt is ice.
What is the latent heat of fusion?The latent heat of fusion refers to the energy that is required to melt 1 Kg of a substance. We must note that this heat goes into the breaking of the internal bonds of the material. Thus, the nature of the internal bonds in the materials are important when we are dealing with the latent heat of fusion.
We can see that the particles of ice are held together by the strong hydrogen bonds. As such, we can see that ice has the highest latent heat of fusion.
Learn more about latent heat:https://brainly.com/question/13428994
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What is the value of the rate of energy transfer of a water heater which produces 1000 J energy in 2 seconds?
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Answer: 500 W (Watts)
Explanation: The rate of energy transfer, also known as power, is calculated by dividing the amount of energy transferred by the time it takes for the transfer to occur. In this case, the water heater produces 1000 J of energy in 2 seconds, so its power would be 1000 J / 2 s = 500 W (watts).
What exerts pressure in all directions?
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Answer: Gases
Explanation: Gases don't have a certain direction, so they go in all directions.