Part A How much work does gravity do on a 1.9-mg raindrop as the drop falls to the ground from a cloud 2500 m above the ground? Express your answer with the appropriate units. W = PA Value 4 Units ? Units input for part A
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- Ayoung woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6 m/s )ê and the force exerted on her by the rope is F = (17 N)â + (12 N)ỹ. Part A Find the work done on the skateboarder by the rope in 25 seconds. Express your answer using two significant figures. ? W = J Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Review your calculations and make sure you round to 2 significant figures in the last step. Part B Assuming the velocity of the bike is the same as that of the skateboarder, find the work the rope does on the bicycle in 25 seconds. Express your answer using two significant figures. Πνα ΑΣφ ? W = JSusan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30° above the floor. The tension is a constant 28.0 N and the coefficient of friction is 0.210. Part A Use work and energy to find Paul's speed after being pulled 2.90 m Express your answer with the appropriate units. 1.93 Submit μA m S ? Previous Answers Request Answer X Incorrect; Try Again; 26 attempts remainingA 23.3-kg child descends a slide 3.4 m high and reaches the bottom with a speed of 1.9 m/s. Part A How much thermal energy due to friction was generated in this process? Express your answer using two significant figures.
- Part A A horizontal spring with spring constant 140 N/m is compressed 17 cm and used to launch a 2.1 kg box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of Use work and energy to find how far the box slides across the rough surface before stopping. kinetic friction of the box on the surface is 0.15. Express your answer using two significant figures. ? cm = 1Having trouble coming to a conclusion for this question.A crate slides down a ramp that makes a 20° angle with the ground. To keep the crate moving at a steady speed, Paige pushes back on it with a 60 N horizontal force. Part A How much work does Paige do on the crate as it slides 3.5 m down the ramp? Express your answer with the appropriate units. W = Value Units Submit Previous Answers Request Answer ? X Incorrect; Try Again; 2 attempts remaining
- A 600 N crate slides 12 m at constant speed down a ramp that is tilted 35° above horizontal. ▼ Part A How much work does gravity do on the crate as it slides the 12 m? Express your answer with the appropriate units. W = Submit Part B Eth μĂ Submit Value Request Answer What is the change in thermal energy? Express your answer with the appropriate units. 9 μÅ Value C Request Answer Units Units ? ? 2 of 82 Review Consta3Part A If you slide down a rope, it's possible to create enough thermal energy to burn your hands or your legs where they grip the rope. Suppose a 40 kg child slides down a rope at a playground, descending 1.5 m at a constant speed. How much work does gravity do on the child as he slides down the rope? Express your answer with the appropriate units. HẢ W = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the change in thermal energy? Express your answer with the appropriate units. AUND -- Eth Value Units %3D Submit Request Answer
- I need help with this Work physics question.Part A A0.60 kg book slides on a horizontal table, The kinetic friction force on the book has magnitude 1.1 N. How much work is done on the book by friction during a displacement of 3.4 m to the left? Express your answer with the appropriate units. HẢ W = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B The book now slides 3.4 m to the right, returning to its starting point. During this second 3.4 m displacement, how much work is done on the book by friction? Expre your nswer with the appropria eunits. Ii HẢ W2 = Value Units Submit Request Answer Part CHelp