Work requires O motion. O zero net force. O zero momentum. a force perpendicular to the direction of motion.
Q: During a drag race Car A does work in moving 500 m in 4 seconds whereas Car B does the same work in…
A: Given two cars A and B does same work. Time of car A tA = 4 sec Time of car B tB = 5 sec We have to…
Q: How much work is done in lifting a 100-kg load of bricks to a height of 30 m on a building under…
A: Given that-Mass, m=100 kgHeight, h=30 mWe know that-Acceleration due to gravity, g=9.8 m/s2
Q: Differentiate between work and power.
A: Work and power are two important concepts of mechanics. Both are scalar quantities.
Q: TS Compute the radiation flux a small surface with & = 0.7 at 25°C in a large room whose surfaces…
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Q: A car engine accelerates a 1000 kg car from rest to 14 m/s in 6.5 s. How much power does the engine…
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Q: Calculate the kinetic energy of a 226. mg raindrop moving at a speed of 3.4m/s. Round your answer to…
A: The objective of this question is to calculate the kinetic energy of a raindrop given its mass and…
Q: Cite an example in which a simple machine makes your work easier and faster.
A: In this question we have to give an example of a simple machine. Please give positive feedback if…
Q: Which do you think requires more power: moving up stairs at a slow speed (ex: walking) or moving up…
A: Let’s get this out of the way first: energy is a scalar quantity an its units are joules.…
Q: A boy is pulling his sister in a wagon , as shown in the figure . He exerts a force of F = 47N at an…
A: Given Force applied = F = 47 N angle above the horizontal= 30° displacement travel = 31.5 m We have…
Q: Wile E is back again! And again he's falling, this time from a 30m cliff. Wile E mass is 63kg. a.…
A: Given data: Height of the cliff (h) = 30 m HA = (1/3)h = 10 m Need to determine the speed at point…
Q: How much work is done by a 59 kg ninja watrior in climbing a ladder that is 9 meters long? Express…
A: Mass of ninja warrior (m) = 59 kg Length of ladder (L) = 9 m
Q: Work-done and power sent by them?
A: Given, Boy take 40 sec to climb up a stairs while, Boy B take 25 sec for the same job. Compare…
Q: the basics of work and energy.
A: Work is the product of the displacement of the body with the force acting on it in the direction of…
Q: A boat travels 200 m due NE, while the wind exerts a force of 450N toward West. How much work does…
A: Given information: The distance traveled by the boat in NE direction (d) = 200 m The magnitude and…
Q: Problem 5: A horizontal force of magnitude 19.9 N pushes a box along a horizontal floor at a…
A: Given value--- force = 19.9 N. constant speed = 6.99 m/s. We have to find--- power ?
Q: The system is released from rest with no slack in the cable and with the spring stretched 230 mm.…
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Q: A 50N horizontal force is used to pull a box along a surface. How much work does it do in pulling…
A: Given: The force is 50 N. The distance is 20 m.
Q: rue or false Energy is conserved in all situations.
A: Given: The answer is mentioned below:
Q: Bobby and Michael are competing on bleacher runs. Both runners weight the same. Bobby runs up the…
A: Work done by gravitational forc depends only on initial and final position since gravitational force…
Q: Calculate the work done when a 22-NN force pushes a cart 3.6 mm .
A: Work done (W) = F × S Force (F) = 22N Displacement (S) = 3.6m
Q: Which illustrates zero work?. O hitting a baseball O carrying a bag while running O climbing up a…
A: Solution: Let's check each option one by one Hitting a ball Work is non zero on…
Q: A 20-N force is the only force on a 2-kg crate that starts from rest. At the instant the crate has…
A: We have givenHere, F, m, u, and d are the force, mass, initial velocity, and distance.
Q: ngling on the free end on the 12.0-m long rope, the other end of which is fixed to a tree limb…
A: We know that the formula of the work done is given as ' W = F ds cosθ where W is the work done F is…
Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…
A: Given: Mass,m=200g=200×10-3kgHeight,h=100mFinal Velocity,v=8m/sInitial Velocity,u=0m/sAcceleration…
Q: A 38.0 kg satellite has a circular orbit with a period of 2.20 h and a radius of 4.80 × 106 m around…
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Q: All the units below are units of power except: O Horsepower O Watts O Newtons O Joules per second O…
A: In the given question, We have to discuss about units of power. Then We choose the correct option.
Q: 2 people of the same mass climb the same set of stairs. Person A climbs the stairs in 25s. Person B…
A: Part (a) The work done does not depends on the time taken by both the people. The expression for…
Q: A 2 kg rock is thrown upward, with a speed of 5 m/s and returns to the same spot, with the same…
A: Give Mass m = 2 kg Initial velocity is U = 5 m/s in upward direction. Final velocity is V = 5 m/s…
Q: A man pushes a box up a trictionless ramp onto a dock He then lifts a second box of the same mass…
A: Work done is given as: W=F.s=Fscosθ Here, F is the force, s is the displacement, and θ is the angle…
Q: How much work is done? when 50N of force move a box through a distance?
A: Given, Force = 50 N
Q: A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of…
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Q: The jetski has a mass of 200 kg and a speed of 20 m/s. How much work will it take to stop it?…
A: Given value--- Mass = 200 kg. initial speed = 20 m/s. final speed = 0 m/s. We have to find---…
Q: A 2.82 kg object is dropped, from rest, from a height of 24.4 m above the ground. Assuming…
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Q: (a) What is its kinetic energy at this moment? (b) Find the net work done on the object if its…
A: Please refer below page.If you have any doubts please feel free to ask.Explanation:Step 1: Step 2:
Q: State the work-kinetic energy theorem in a few lines.
A: State the work-kinetic energy theorem.
Q: A 80.0 kg mail bag hangs by a vertical rope 3.5 m long. A postal worker then displaces the bag to a…
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Q: Its takes 40 sec for a boy A to climb up a stairs while boy B takes 25 sec for the same job.…
A: Given data The time taken by boy A is given as tA = 40 sec. The time taken by boy B is given as tB…
Q: Its takes 45 sec for a girl A to climb up a stairs while boy B takes 35 sec for the same job.…
A: In this question we discuss about work done and power.
Q: Joule is a unit of the following: work, power, potential energy, and kinetic energy, true or false?
A: Work: Work = Force ×Displacement W = F ×S Units of work: 1 J = 1 N m Power: Power = Work…
Q: An object of mass m is compressed against a horizontal and ideal spring of constant k by mount Ax.…
A: Here we have to use conservation of total energy. equating total energy at compressed position at…
Q: Your discussion partner is confused about ideas discussed in Chapter that seem to contradict ideas…
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