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College Physics
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ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A person weights 686 Newtons. On their way home they see an Ice patch .they run and slide across the ice . If the coefficients kinetic friction between the person’s shoe and the ice is 0.05, what is the acceleration of the person as they slide across the ice ?
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- A coin is resting on the surface of a closed book. As you slowly open the cover, the coin remains in place (it doesn't slide). When the book's cover is open 14 degrees, the coin finally starts sliding down. What is the coefficient of static friction between the book and the coin? Answer to 3 decimal places (e.g. 0.123).arrow_forwardIf the coefficient of kinetic friction, lk, between the block and the surface is 0.40 and the magnitude of the frictional force is 80.0 N, what is the weight of the block? 1.6 N 160 N 166 N 200 N 410 Narrow_forwardA book of mass 9 kg rests on a plank. You tilt one end of the plank and slowly increase the angle of the tilt. The coefficient of static friction between the book and the plank is 0.48. What is the maximum angle of tilt for which the book will remain stationary and not slide down the plank?arrow_forward
- A 132 kg crate is sitting at the top of a ramp, which is inclined at an angle of 20 degrees with respect to the horizontal. Someone gives the crate a quick shove to get it moving, after which it slides down the ramp without any further assistance. The coefficient of kinetic friction between the crate and the ramp is µs = 0.24. What is the magnitude of the acceleration (in m/s²) of the crate?arrow_forwardA force of 109 N is used to accelerate a block of ice with a weight of 614 N along a horizontal surface where it encounters a kinetic friction force of 38 N. What is the horizontal acceleration of the block of ice?arrow_forwardA 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.482 and the coefficient of kinetic friction is 0.262. How much force is needed to keep the book moving at a constant speed once it begins moving?arrow_forward
- Two workers are sliding 390 kg crate across the floor. One worker pushes forward on the crate with a force of 450 NN while the other pulls in the same direction with a force of 290 NN using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor?arrow_forwardA 78 kg crate rests on a rough horizontal surface. The coefficient of static friction and coefficient of kinetic friction are 0.3 and 0.2, respectively. What is the value of the maximum static friction? Choices: 23.4 N 210.6 N 234.0 N 229.2 Narrow_forwardA 69 N ice skater is pushed across the ice in a skating rink by a friend. The coefficient of friction between the skater’s ice skates and the ice is 0.10. What force must the friend apply to push the skater at a constant speed across the rink?arrow_forward
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