Answer:c
Explanation:
There is an experiment where hydrochloric acid is added to calcium salt, the gas carbon dioxide is given off, use the info to find out which calcium salt is being usedHow would u test the gas to check if its carbon dioxide remember to include tje change u would expect to see
A white precipitate of calcium carbonate is created when carbon dioxide combines with calcium hydroxide solution.
Thus, A calcium hydroxide solution is limewater. Limewater turns milky or hazy white when carbon dioxide is bubbled through it.
Therefore, you can infer that Co2 is created in the process when it becomes milky or murky white water.
A chemical reaction known as a gas evolution reaction creates a gas, such as oxygen or carbon dioxide. In the instances that follow, an acid and carbonate react to produce salt, carbon dioxide, and water, respectively. For instance, sodium nitrate, carbon dioxide, and water are produced when nitric acid interacts with sodium carbonate.
Thus, A white precipitate of calcium carbonate is created when carbon dioxide combines with calcium hydroxide solution.
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By how many decibels does the intensity level of a sound decrease when you triple your distance from a source of sound?.
The intensity level of a sound decreases by approximately 6 dB every time you double your distance from the source. Therefore, when you triple your distance from the source, the intensity level of the sound will decrease by approximately 18 dB.
What is source?Intensity level is a measure of the strength of a stimulus, stimulus being anything that causes a reaction in an organism or system. It is a quantitative measure of the magnitude of a physical phenomenon, such as sound or light. It is most commonly expressed as a numerical value and is typically measured in decibels (dB). Intensity level is an important concept in fields such as audio engineering, physics, and sensory science, as it is used to measure the strength of a stimulus and to compare different stimuli. For example, the intensity level of a sound is a measure of how loud it is, while the intensity level of light is a measure of how bright it is.
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A 300 kg tree burns to the ground, leaving only ashes. The weight of the ashes after the burn is 10 kg. Explain these results.
After the chemical reaction took place, some of the resulting mass turned into smoke and was released into the atmosphere.
The law of conservation of mass or matter states that matter cannot be created or destroyed in a chemical reaction. That is, in every chemical reaction, the total mass of the reactant must be equal to the total mass of the product.
Mass of reactant = Mass of product
When the 300 kg wood burns, the mass of the ashes and smokes released will be equal to the original mass of the wood and oxygen during initial combustion.
Thus, we can conclude that the remaining 290 kg was turned into smoke and was released into the atmosphere.
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what is the Vector product of A=2.00i+3.00j+1.00k and B= 1.00i -3.00j -2,00k
The vector product of A=2.00i+3.00j+1.00k and B=1.00i-3.00j-2.00k is C=9.00i+4.00j-9.00k.
To find the vector product (also known as the cross product) of two vectors, A and B, we can use the following formula:
C = A × B
Where C is the resultant vector, A and B are the given vectors, and × denotes the cross product.
Given A = 2.00i + 3.00j + 1.00k and B = 1.00i - 3.00j - 2.00k, we can substitute these values into the formula to find the vector product:
C = (2.00i + 3.00j + 1.00k) × (1.00i - 3.00j - 2.00k)
Now, let's expand the cross product using the properties of vector products:
C = (2.00i × 1.00i) + (2.00i × -3.00j) + (2.00i × -2.00k) +
(3.00j × 1.00i) + (3.00j × -3.00j) + (3.00j × -2.00k) +
(1.00k × 1.00i) + (1.00k × -3.00j) + (1.00k × -2.00k)
Now, let's calculate each of these cross products:
C = (2.00 × 1.00) \(i^2\) + (2.00 × -3.00) i × j + (2.00 × -2.00) i × k +
(3.00 × 1.00) j × i + (3.00 × -3.00) \(j^2\) + (3.00 × -2.00) j × k +
(1.00 × 1.00) k × i + (1.00 × -3.00) k × j + (1.00 × -2.00) \(k^2\)
Since i × j = k, j × k = i, and k × i = j, we can simplify the expression further:
C = 2.00k - 6.00i + 4.00i - 9.00j + k - 3.00j - 2.00j - 2.00k
Combining like terms, we get:
C = (2.00i + 4.00i) + (-6.00i - 9.00j - 3.00j) + (2.00k + k - 2.00k)
Simplifying further:
C = 6.00i - 12.00j + k
Therefore, the vector product of A and B is C = 6.00i - 12.00j + k, which can be written as C = 9.00i + 4.00j - 9.00k in terms of i, j, and k.
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The vector product of A and B is -3i - 5j - 9k.
Explanation:The vector product, also known as the cross product, of two vectors A and B is denoted as A x B. It is a vector that is perpendicular to both A and B. To calculate the vector product, you can use the formula A x B = (Ay * Bz - Az * By)i + (Az * Bx - Ax * Bz)j + (Ax * By - Ay * Bx)k.
In this case, we have A = 2.00i + 3.00j + 1.00k and B = 1.00i - 3.00j - 2.00k. Substituting the values into the formula, we get A x B = (3 * -2 - 1 * -3)i + (1 * 1 - 2 * -2)j + (2 * -3 - 3 * 1)k = -3i - 5j - 9k.
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Why do you think psychology courses like this one are often requirements of so many different programs of study ?
Answer:
Because psychology helps you understand the mind of someone else. It can teach you about traits people may have based on what you see, or a likely personality of someone based on their history, and so many other things. Psychology helps you understand a whole other person, and understanding people is a big part in many things such as medicine, STEM, nursing, teaching, and many other things. Understanding people and the things around you is a necessary skill.
1. The pressure of a gas drops from 1.18 atm to 0.49 atm. If the
initial volume of the gas is 45 liters, what is the final volume?
The final volume is 18.68L.
what is Boyle's law?A fundamental law of chemistry called Boyle's Law describes how a gas behaves when it is kept at a constant temperature. The law states that the volume of a gas is inversely proportional to the pressure it exerts at a fixed temperature. Robert A. Boyle discovered this relationship in 1662.
Boyle's law explains why pressure and volume for a gas at a specific temperature are always inversely proportional. It explains how a decrease in lung pressure occurs when the volume of the lung expands during inspiration.
According to Boyle's law,
P₁V₁ = P₂V₂
0.49×45 = 1.18×V₂
V₂ = 0.49×45/1.18
V₂ = 18.68L.
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7. State condition of equilibrium when a borly is acted upon by a number of parallel forces. A uniform metal tube of length 5cm and mass 9 kg is suspended horizontally by two vertical wire attaches at 50cm and 150cm respectively from the ends of the tuber Find the tension in each wire. in tril Solution -
According to the question the tension in each wire is 1.96 N.
What is tension?Tension is a term that describes the psychological and physical state of a person or system in which there is a high degree of stress, uncertainty, and anxiety. It is often associated with conflict and is often experienced when individuals or groups feel threatened or constrained in some way. Tension can be experienced in a variety of different contexts, from interpersonal relationships to the workplace. It can result from a variety of different factors, including a lack of communication, conflicting goals or expectations, and unmet needs.
The body is in equilibrium when the sum of all forces acting on it is equal to zero. In this case, the forces acting on the metal tube are the two wires and the weight of the tube due to gravity.
The tension in each wire is equal to the weight of the tube divided by the length of the tube. This is because the tube is suspended horizontally, so the forces in each wire must be equal in order to keep the tube in equilibrium.
Therefore, the tension in each wire is:
T = (9 kg × 9.8 m/s2) / (5 cm × 0.01 m)
= 1.96 N
Therefore, the tension in each wire is 1.96 N.
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What did Piaget believe about his stages of cognitive development?
A. It is not required to complete one stage to move on to the next one.
B. All children go through the stages in the exact same order.
C. A child’s age is the main factor to determine when they enter a stage.
D. All adults complete all four stages of development by the age of 25.
All adults complete all four stages of development by the age of 25. Option D.
For Piaget cognitive development was the gradual reorganization of mental processes as a result of biological maturation and environmental experience. Children make sense of the world around them and experience discrepancies between what they already know and what they discover around them.
Fundamentally Piaget believed that man could make sense of the world on his own. From a theological point of view, he was a psychological constructivist believing that learning is caused by a mixture of two processes for him assimilation and adaptation. Piaget supported the idea that children think differently than adults and his research identified several important milestones in children's intellectual development.
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Who does more work - a man who lifts a large box from the ground up into the back of a truck, or a man who puts the same box on a trolley and wheels it up a ramp into the truck?
•the man who lifts it
•the man who uses the trolley
•they do the same work
Please i need help ASAP!!! *will mark brainliest if right*
Question 1
2 pts
Explain what causes a solution to be a strong acid.
Answer:
Cuanto más fuerte es el ácido, más rápido se disocia para generar H +start superscript, plus, end superscript. Por ejemplo, el ácido clorhídrico (HCl) se disocia completamente en iones hidrógeno y cloruro cuando se mezcla con agua, por lo que se considera un ácido fuerte.
Part C Now, grab Tracker’s protractor tool (the green angle in the video frame) and measure the angle of incidence and the angle of refraction for the frame numbers specified in the table below. Hints: To advance the video a frame at a time, use the step buttons on the right. Position the vertex of the protractor exactly at the origin of the coordinate axis. Move the arms of the protractor so that one arm is on the vertical axis (above or below, as appropriate) and the other on the light ray.
In order to measure the angle of incidence and the angle of refraction using Tracker's protractor tool (the green angle in the video frame), the following steps should be followed:
Step 1: Open the video in Tracker software.
Step 2: Click on the "Measure" button on the toolbar at the top of the software.
Step 3: From the dropdown menu, select "Angle".
Step 4: Click on the "protractor tool" icon (the green angle in the video frame).
Step 5: Position the vertex of the protractor exactly at the origin of the coordinate axis and move the arms of the protractor so that one arm is on the vertical axis (above or below, as appropriate) and the other on the light ray.
Step 6: Measure the angle of incidence and the angle of refraction for the frame numbers specified in the table below by using the step buttons on the right to advance the video a frame at a time.
Step 7: Record the measured angles in the table below. Note that the angle of incidence should be measured on the incident ray (the ray that is coming from the left), and the angle of refraction should be measured on the refracted ray (the ray that is coming from the right).In conclusion, by following these steps, one can measure the angle of incidence and the angle of refraction using Tracker's protractor tool.
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If m1 is 50 kg and has a velocity of 4 m/s, and m2 is 75 kg and has a velocity of -1 m/s, then what would be the final velocity of object 2 if the two objects collide and bounce off of each other and object 1 has a final velocity of -2 m/s?
The final velocity of object 2 is: 3 m/sec
What is the conservation of mass?According to the rule of conservation of mass, no atoms are created or destroyed during a chemical process. Instead, the atoms combine in a variety of ways to create goods. This explains why each element has the equal amount of atoms on both sides of an equation with balanced symbols.
According to conservation of mass,
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Given that,
m₁ = 50 kg
m₂ = 75 kg
u₁ = 4 m/s
u₂ = -1 m/s
v₁ = -2 m/s
v₂ = ?
Now, putting the values,
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
(50 × 4) + [75 × (-1)] = [50 × (-2)] + (75 × v₂)
or, 125 = -100 + 75 v₂
or, 75 v₂ = 225
or, v₂ = 3 m/sec.
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A wave is moving at a velocity of 8 km/sec with a frequency of 10 Hz.
Use the equation you rearranged to determine the wavelength of the wave.
Explanation:
arn core concepts.
See Answer
1) For a P wave with velocity of 8 km/s (typical upper mantle speed) in a Poisson solid,compute the wavelength for waves with periods of:
a) 15 sec
b) 1 sec
c) 0.1 sec (100 Hz)
2) Repeat question 2 for an S wave in the same medium (Hint: you have to determine the S wave speed).
A square wave has amplitude 0 V for the low voltage and 4 V for the high voltage. Calculate the average voltage by integrating over one period of the waveform. Hint: the equation for a square wave will be a piecewise function and it will be convenient to start the integration where the voltage changes; for example in this problem we could define that during the first half of the period the voltage is 0 V and for the second half of the period the voltage is 4 V
Answer:
V_{average} = \(\frac{1}{2} V_o\) , V_{average} = 2 V
Explanation:
he average or effective voltage of a wave is the value of the wave in a period
V_average = ∫ V dt
in this case the given volage is a square wave that can be described by the function
V (t) = \(\left \{ {{V=V_o \ \ \ t< \tau /2} \atop {V=0 \ \ \ \ t> \tau /2 } } \right.\)
to substitute in the equation let us separate the into two pairs
V_average = \(\int\limits^{1/2}_0 {V_o} \, dt + \int\limits^1_{1/2} {0} \, dt\)
V_average = \(V_o \ \int\limits^{1/2}_0 {} \, dt\)
V_{average} = \(\frac{1}{2} V_o\)
we evaluate V₀ = 4 V
V_{average} = 4 / 2)
V_{average} = 2 V
The cart of mass 10kg shown above moves without frictional loss on a level table. A 10N force pulls on the cart horizontally to the right. At the same time, a 30N force at an angle of 60° above the horizontal pulls on the cart to the left. What is the magnitude of the horizontal acceleration of the cart?
2.5m/s²
2.0m/s²
.5m/s²
1.6m/s²
2.6m/s²
The magnitude of the horizontal acceleration of the cart is 2.5 m/s². Hence option 1 is correct.
What is magnitude?Magnitude is defined as a numerical value, whereas intensity offers us a sense of effect. In terms of motion, it shows the absolute or relative size, direction, or movement of an object. It is used to describe something's size or scope.
The cart has a mass of m = 10 k g. F 1 = 30 N horizontally to the right and F 2 = 10 N at an angle of 60°C above the horizontal pushes on the cart to the left make up the forces.
FH = F1 − F2 cos60°C
FH = (30−10cos60°C) N
FH = 25N
a=FH / m
a=25 N / 10 kg
a=2.5 m/s²
Thus, the magnitude of the horizontal acceleration of the cart is 2.5 m/s². Hence option 1 is correct.
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Determine whether the center of mass of the system consisting of the earth and moon lies inside or outside the earth. Assume that the radius of the earth is 6.37 x 10^3 km, the mass of the earth is 5.98 x 10^24 kg, the mass of the moon is 7.35 x10^22 kg, and the distance between the centers of the earth and the moon is 3.84 x 10^5 km. When computing the center of mass, consider the earth and the moon as point masses.
Answer:
R_cm = 4.66 10⁶ m
Explanation:
The important concept of mass center defined by
R_cm = 1 / M ∑ x_i m_i
where M is the total mass, x_i and m_i are the position and masses of each body
Let's apply this expression to our case.
Let's set a reference frame where the axis points from the center of the Earth to the Moon,
R_cm = 1 / M (m_earth 0 + m_moon d)
the total mass is
M = m_earth + m_moon
the distance from the Earth is zero because all mass can be considered to be at its gravimetric center
let's calculate
M = 5.98 10²⁴ + 7.35 10²²
M = 6.0535 10₂⁴24 kg
we substitute
R_cm = 1 / 6.0535 10²⁴ (0 + 7.35 10²² 3.84 )
R_cm = 4.66 10⁶ m
A piston above a liquid in a closed container has an area of 0.75m^2, and the piston carries a load of 200kg. What will be the external pressure on the upper surface of the liquid?
Answer:
2613.3 pa
Explanation:
p=F/A
p=ma/A
p=200×9.8/0.75
p=2613.3
1.2 consider the following time periods: Ancient civilisation, 21th century. in each time period, based on you understanding of the differences between the time periods: a) write a paragraph of five lines in each time period b)locate the time period in your own context.
Answer: In contrast to the 21st century, which is a period of enormous technological advancement and globalization, ancient civilizations were agrarian communities with a high degree of social stratification.
Explanation: the differences between ancient civilizations and the 21st century, in two paragraphs of five lines each:
A)
Ancient civilizations:
Paragraph 1: Ancient societies were agrarian, focusing on commerce and agriculture, with a small elite ruling a large population of farmers, artisans, and laborers.
Paragraph 2:Ancient civilizations advanced art, architecture, mathematics, science, and social systems, creating religious beliefs and intricate social systems like Egyptian, Greek, Roman, and Chinese.
21st century:
Paragraph 1: Globalization and technological advancements in the 21st century have made us connected to the world, enabling us to stay connected through information and communication tools.
Paragraph 2: The 21st century faces challenges like economic inequality, political instability, and climate change, yet it also represents a hopeful generation dedicated to improving the world and overcoming these challenges.
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In ancient civilizations, major developments in human history took place, such as the invention of writing systems and the rise of empires. In the 21st century, advancements in technology and globalization have transformed the world. Ancient civilizations have exerted a lasting influence on our modern world, from written communication to political systems and architectural wonders.
Explanation:In ancient civilizations, major developments in human history took place, such as the invention of writing systems, the rise of empires, and the development of complex societies. For example, in ancient Egypt, pharaohs ruled over a hierarchical society and constructed impressive monuments like the pyramids. In the 21st century, advancements in technology and globalization have transformed the world. This period is characterized by rapid communication, scientific and technological breakthroughs, and interconnectedness through the internet and social media.
Locating ancient civilizations in our own context, we can observe their influence in our modern world. The writing systems developed by ancient civilizations laid the foundation for written communication, which is still vital today. The concept of empires and nation-states, which began in ancient times, is significant in understanding modern political systems. Additionally, the architectural wonders of ancient civilizations, like the Great Wall of China and the Colosseum, continue to be celebrated and preserved as cultural heritage.
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A bicycle has a momentum of 36 kg•m/s and a velocity of 4 m/s. What is the mass of the bicycle?
Answer:
45kw45_32+675&453try to get it done
Answer:
A: 9 kg
Explanation:
on edge! hope this helps!!~ ∩(︶▽︶)∩
An air jet is flying with a constant speed at an angle of 30° above the horizontal as indicated in the figure below. The weight ⃗ of jet has magnitude W = 86 500 N and its engine provide a forward thrust ⃗ of magnitude T = 103 000 N. In addition, the lift force ⃗ (directed perpendicular to the wings) and the force ⃗ of air resistance (directed opposite to the motion) act on the jet. Determine the magnitude of ⃗ and ⃗ . (5)
To determine the magnitude of the lift force ⃗ and the force of air resistance ⃗ acting on the jet, we need to resolve the weight ⃗ and the forward thrust ⃗ into their horizontal and vertical components.
The weight ⃗ can be resolved into two components:
- the vertical component, Wsin(30°), acting downward
- the horizontal component, Wcos(30°), acting to the left
The forward thrust ⃗ can also be resolved into two components:
- the vertical component, Tsin(30°), acting upward
- the horizontal component, Tcos(30°), acting to the right
Since the jet is flying at a constant speed, the lift force ⃗ must be equal in magnitude to the weight component acting downward, Wsin(30°). Therefore, the magnitude of ⃗ is 86,500 Nsin(30°) = 43,250 N.
The force of air resistance ⃗ is equal in magnitude to the horizontal component of the weight, Wcos(30°), minus the horizontal component of the forward thrust, Tcos(30°). Therefore, the magnitude of ⃗ is (86,500 Ncos(30°)) - (103,000 Ncos(30°)) = -8,715 N, where the negative sign indicates that the force of air resistance is acting in the opposite direction to the motion of the jet.
Therefore, the magnitude of the lift force ⃗ is 43,250 N and the magnitude of the force of air resistance ⃗ is 8,715 N.
Two blocks, 1 and 2, are connected by a massless string that passes over a massless pulley. 1 has a mass of 2.25 kg and is on an incline of angle 1=42.5∘ that has a coefficient of kinetic friction 1=0.205. 2 has a mass of 5.55 kg and is on an incline of angle 2=33.5∘ that has a coefficient of kinetic friction 2=0.105
. The figure illustrates the configuration.
A system of two blocks connected by a rope passing over a pulley. The system sits atop a scalene triangle whose long edge forms the base. The pulley is attached to the apex of the triangle. Box M subscript 1 rests on the triangle edge to the left of the pulley, which makes an angle of theta subscript 1 with the base of the triangle. The coefficient of friction between box M sub 1 and the surface is mu subscript 1. Box M subscript 2 rests on the triangle edge to the right of the pulley, which makes an angle of theta subscript 2 with the base of the triangle. The coefficient of friction between box M sub 2 and the surface is mu subscript 2.
The force acting on the system of two blocks connected by a rope passing over a pulley is -13.26 N.
The system of two blocks connected by a rope passing over a pulley are M1 and M2, where M1 rests on the triangle edge to the left of the pulley, which makes an angle of theta subscript 1 with the base of the triangle. The coefficient of friction between box M1 and the surface is mu subscript 1. M2 rests on the triangle edge to the right of the pulley, which makes an angle of theta subscript 2 with the base of the triangle.
The coefficient of friction between box M2 and the surface is mu subscript 2. The system sits atop a scalene triangle whose long edge forms the base. The pulley is attached to the apex of the triangle.M1 has a mass of 2.25 kg and is on an incline of angle 1=42.5∘ that has a coefficient of kinetic friction 1=0.205. M2 has a mass of 5.55 kg and is on an incline of angle 2=33.5∘ that has a coefficient of kinetic friction 2=0.105.The free-body diagram of M1 shows that the weight of M1 acts straight downwards (vertically) and the normal force acts perpendicular to the slope.
The force of friction opposes the motion and acts opposite to the direction of motion.M1 = 2.25 kgTheta subscript 1 = 42.5 degreesMu subscript 1 = 0.205g = 9.81 m/s²In the free-body diagram of M2, the normal force acts perpendicular to the incline of the slope, the weight of the object acts vertically downwards and parallel to the incline, and the force of friction opposes the motion and acts opposite to the direction of motion.M2 = 5.55 kgTheta subscript 2 = 33.5 degreesMu subscript 2 = 0.105g = 9.81 m/s²The tension in the string is the same throughout the rope. Since the masses are being pulled by the same rope, the acceleration of the objects is the same as the acceleration of the rope.
The tension in the string is directly proportional to the acceleration of the objects and the rope.A system of two blocks connected by a rope passing over a pulley has a total mass of M. The acceleration of the system is given by the formula below:a = [(m1-m2)gsin(θ1) - μ1(m1+m2)gcos(θ1)] / (m1 + m2)Where, μ1 = 0.205 is the coefficient of friction of block M1θ1 = 42.5 degrees is the angle of the incline of block M1M1 = 2.25 kg is the mass of block M1M2 = 5.55 kg is the mass of block M2g = 9.81 m/s² is the acceleration due to gravitysinθ1 = sin 42.5 = 0.67cosθ1 = cos 42.5 = 0.75The acceleration of the system is:a = [(2.25-5.55)(9.81)(0.67) - (0.205)(2.25+5.55)(9.81)(0.75)] / (2.25 + 5.55)a = -1.7 m/s² (the negative sign indicates that the system is accelerating in the opposite direction).
The force acting on the system is given by:F = MaWhere M is the total mass of the system and a is the acceleration of the system. The total mass of the system is:M = m1 + m2M = 2.25 + 5.55M = 7.8 kgThe force acting on the system is:F = 7.8(-1.7)F = -13.26 N (the negative sign indicates that the force is acting in the opposite direction).
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Two football teams, the Raiders and the 49ers are engaged in a tug-of-war. The Raiders are pulling with a force of 5000N. Which of the following is an accurate statement?
A. The tension in the rope depends on whether or not the teams are in equilibrium.
B. The 49ers are pulling with a force of more than 5000N because of course they’d be winning.
C. The 49ers are pulling with a force of 5000N.
D. The tension in the rope is 10,000N.
E. None of these statements are true.
Answer:
E. None of these statements are true.
Explanation:
We can't say the exact or approximate amount of tension on the rope, since we do know for sure from the statement who is winning.
for A, the tension on the rope does not depend on if both teams pull are in equilibrium.
for B, the 49ers would be pulling with a force more than 5000 N, if they were winning. The problem is that we can't say with all confidence that they'd be winning.
for C, we don't know how much tension exists on the rope, and its direction, so we can't work out how much tension the 49ers are pulling the rope with.
for D, just as for C above, we can't work out how much tension there is on the rope, since we do not know how much force the 49ers are pulling with.
we go with option E.
An RL circuit has L=5 H and R = 22.
a) How long would it take, following the removal of the battery, for the magnetic energy to decay to 13% of its maximum value?
b) What is the voltage across the inductor at that instant?
a) , it would take approximately 0.4638 seconds for the magnetic energy to decay to 13% of its maximum value.. b) the voltage across the inductor at the instant when the magnetic energy has decayed to 13% of its maximum value is 6.4 times the initial current in the circuit.
An RL circuit consists of a resistor (R) and an inductor (L) connected in series. When a battery is connected to the circuit, the inductor stores magnetic energy, which creates a magnetic field. When the battery is removed, the magnetic energy in the inductor begins to decay, and the magnetic field collapses, inducing a voltage across the inductor.
a) The time constant (τ) of an RL circuit is given by the formula:
τ = L/R
where L is the inductance in henries, and R is the resistance in ohms. The time constant represents the time required for the magnetic energy to decay to approximately 36.8% of its maximum value.
In this case, L = 5 H and R = 22 ohms. Therefore, the time constant of the circuit is:
τ = L/R = 5 H / 22 ohms = 0.2273 seconds
To calculate the time required for the magnetic energy to decay to 13% of its maximum value, we can use the formula:
t = -ln(0.13) * τ
where ln is the natural logarithm. Plugging in the values, we get:
t = -ln(0.13) * 0.2273 seconds
t = 0.533 seconds
Therefore, it would take approximately 0.533 seconds for the magnetic energy in the inductor to decay to 13% of its maximum value.
b) To find the voltage across the inductor at that instant, we can use the formula:
V = L * di/dt
where V is the voltage across the inductor, L is the inductance, and di/dt is the rate of change of the current in the circuit.
At the instant when the magnetic energy in the inductor has decayed to 13% of its maximum value, the current in the circuit is given by:
I = I0 * e^(-t/τ)
where I0 is the initial current, and e is the mathematical constant approximately equal to 2.71828. Plugging in the values, we get:
I = I0 * e^(-0.533/0.2273)
I = 0.292 * I0
Therefore, the rate of change of current (di/dt) at that instant is given by:
di/dt = I / τ = (0.292 * I0) / 0.2273
Now, we can calculate the voltage across the inductor:
V = L * di/dt = 5 H * (0.292 * I0 / 0.2273)
V = 6.4 * I0 volts
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Hi please help on question! . If answer is correct I'll rate you five stars a thanks and maybe even brainliest! You will even get 54 pts!!
Here is a function machine.
Input : multiply by 6. Subtract 80: output
The input is the same as the output. Find the input.
Also can you please show me an easy to work out these type of questions
Answer:
Explanation:
Sure, I'd be happy to help you with the question!
Let's denote the input as x. According to the function machine, the input is multiplied by 6 and then 80 is subtracted from the result to obtain the output.
So, the function can be written as:
Output = (6 * x) - 80
Now, the problem states that the input is the same as the output. Therefore, we can set up the equation:
x = (6 * x) - 80
Let's solve this equation to find the value of x:
x = 6x - 80
Subtracting 6x from both sides, we get:
x - 6x = -80
Combining like terms, we have:
-5x = -80
Dividing both sides by -5, we find:
x = (-80) / (-5)
Simplifying the expression, we have:
x = 16
Therefore, the input (x) that results in the input being the same as the output is 16.
To work out these types of questions, it's important to carefully read the instructions and understand the operations being performed in the function machine. Then, you can set up an equation with the input and output, and solve for the unknown value. Always double-check your solution to ensure it satisfies the given conditions of the problem.
Answer:
16
Explanation:
(x*6) - 80 = x
Multiply the parentheses
6x - 80 = x
Add 80 to each side to get
6x = x + 80
Subtract x from both sides to get
5x = 80
Divide both sides by 5
x = 16
What happens to the body’s immune system when attacked by HIV ?
Answer:
HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections.
Explanation:
1) How many joules of heat are required to raise the temperature of 550 g of water from
12.7 °C to 28.8°C ? Specific heat of liquid water is 4.184 J/g °C.
Answer:
Explanation:
You can use \(Q = mc\Delta T=(550)(4.184)(28.8-12.7)=37049.32\) joule.
Hurry please
The distance from wave to wave is called what
Answer:
Wavelength
Explanation:
Barney walks at a velocity of 1.7 meters/second on an inclined plane which has an angle of 18.5 with the ground what is the horizontal component of Barney’s velocity
Answer:
Explanation:
The horizontal velocity is 1.61.
A harp string has a length of 30.5 cm and vibrates with a node at each end and an antinode inthe center. If its frequency is 440 Hz, find (a) the wavelength and (b) the speed of the waves on the string.
Answer:
In this problem, the harp string is fixed at both ends, so it is a standing wave with nodes at both ends and an antinode in the center. The frequency of the wave is given as 440 Hz, and the length of the string is 30.5 cm.
(a) To find the wavelength of the wave, we can use the formula:
λ = 2L/n
where λ is the wavelength, L is the length of the string, and n is the number of nodes. In this case, n = 2 (since there are nodes at both ends) and L = 30.5 cm, so we have:
λ = 2(30.5 cm)/2 = 30.5 cm
Therefore, the wavelength of the wave is 30.5 cm.
(b) To find the speed of the wave on the string, we can use the formula:
v = fλ
where v is the speed of the wave, f is the frequency of the wave, and λ is the wavelength. In this case, f = 440 Hz and λ = 30.5 cm, so we have:
v = (440 Hz)(30.5 cm) = 13420 cm/s
Therefore, the speed of the wave on the string is 13420 cm/s
Explanation:
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What happens to the temperature of a substance while it is changing state?
A. It decreases first and then remains constant.
B. It increases first and then decreases.
C. It remains constant.
D. It varies randomly.
The temperature remains constant while the substance is changing state.The correct answer is option C.
When a substance undergoes a change of state, such as melting, boiling, or condensing, the temperature of the substance remains constant during the phase transition. The process of changing state requires the absorption or release of heat energy without a change in temperature.
For example, when a solid is heated, its temperature increases until it reaches the melting point. At this point, the substance starts to change from a solid to a liquid, but the temperature remains constant until all the solid has melted.
The absorbed heat energy is used to break the intermolecular forces holding the particles together, rather than increasing the kinetic energy of the particles.
Similarly, during the process of condensation or freezing, a substance releases heat energy as it changes state. This released energy is used to form intermolecular forces and convert the substance from a gas to a liquid or a liquid to a solid. The temperature remains constant until the phase transition is complete.
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