A boxed 14.0 kg computer monitor is dragged by friction 6.50 m up along the moving surface of a conveyor belt inclined at an angle of 35.1° above the horizontal. The monitor's speed is a constant 2.80 cm/s. Part A How much work is done on the monitor by friction? Express your answer in joules. W friction = Submit Part B W OF IVE ΑΣΦ How much work is done on the monitor by gravity? Express your answer in joules. gravity = Request Answer - ΑΣΦ Review | Constants ? ? J J

Hockey puck A has half the mass of hockey puck B. Starting from rest, both pucks are pulled the same distance across frictionless ice by strings with the same tension. Compare the work done on puck A and puck В. O The same amount of work was done on puck A and puck B. O The work done on puck A was twice as large as that done on puck B. O The work done on puck A was half as large as that done on puck B. O None of the above is true.

n eText Part B A microwave oven of mass 10.0 kg is pushed a distance 8.45 m up the sloping surface of a loading ramp inclined at an angle of 38.6 ° above the horizontal, by a constant force F with a magnitude 140 N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is Area What is the work done on the oven by the friction force? nent Sharing Take the free fall acceleration to be 9.80 m/s . 0.280. ettings e Tools Wi 185.09 J Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part C Compute the increase in potential energy for the oven. Take the free fall acceleration to be 9.80 m/s . ΑΣΦ ? J P Pearson Copyright 2022 Pearson Education Inc. All rights reserved. I Terms of Use | Privacy Policy I Permissions | Contact - Type here to search 080 080- TIT

n 13 A 55 kg box is raised a distance of 2.0 m above a storeroom floor. ed What is the change of potential energy as a result of this move? lout of

Help me 3a and 3b

An object moving in the xy-plane is subjected to the force F = (2xyî+x²) N, where x and y are in m. Part A The particle moves from the origin to the point with coordinates (a, b) by moving first along the x-axis to (a,0), then parallel to the y-axis. How much work does the force do? Express your answer in terms of the variables a and b. W = Submit Part B W = Π| ΑΣΦ Submit Request Answer The particle moves from the origin to the point with coordinates (a, b) by moving first along the y-axis to (0, b), then parallel to the x-axis. How much work does the force do? Express your answer in terms of the variables a and b. V—| ΑΣΦ ? Request Answer ?

Review Istants Sam, whose mass is 72 kg , straps on his skis and starts down a 64 m -high, 20° frictionless slope. A strong headwind exerts a horizontal force of 200 N on him as he skies. Part A Use work and energy to find Sam's speed at the bottom. Express your answer to two significant figures and include the appropriate units. µA ? Value Units V = Submit Request Answer

A block of weight w = 25.0 N sits on a frictionless inclined plane, which makes an angle θ = 30.0 ∘ with respect to the horizontal, as shown in the figure. A force of magnitude F = 12.5 N applied parallel to the incline, is just sufficient to pull the block up the plane at constant speed. Part A The block moves up an incline with constant speed. What is the total work Wtotal done on the block by all forces as the block moves a distance L = 2.70 m up the incline? Include only the work done after the block has started moving at constant speed, not the work needed to start the block moving from rest. Part B What is Wg, the work done on the block by the force of gravity w⃗  as the block moves a distance L = 2.70 m up the incline? Part C What is WF, the work done on the block by the applied force F⃗  as the block moves a distance L = 2.70 m up the incline?   Part D What is WN, the work done on the block by the normal force as the block moves a distance L = 2.70 m up the inclined plane?

A 100 kg block is pulled at a constant speed of 4.0 m/s across a horizontal floor by an applied force of 141 N directed 37° above the horizontal. What is the rate at which the force does work on the block? W

A 61.5-kg hiker starts at an elevation of 1200 m and climbs to the top of a peak 2750 m high. Part A What is the hiker's change in potential energy? Express your answer to three significant figures and include the appropriate units. ΔΡΕς = Submit Part B W min = Submit Part C What is the minimum work required of the hiker? Express your answer to three significant figures and include the appropriate units. O Yes O No Value Submit μA Request Answer ī μÅ Value Request Answer Units Can the actual work done be greater than this? Request Answer Units ? ?