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Bob (m = 60kg) is wearing a sticky suit. Just as he reaches his desired speed of 6m/s, he reaches the edge of ice (assume the ice is frictionless) and collides with a large crate (m = 250kg). Bob and the crate stick together and slide along level ground (uk = 0.60). a) How far do Bob and the large crate slide before coming to rest? b) How elastic was the collision? c) How much thermal energy has been generated during the slide?
A 954 kg drag race car accelerates from rest to 113 km/h in 0.919 s. What average force is exerted on the car
Two current-carrying wires are exactly parallel to one another and both carry 3.5 A of current, What is the direction of the magnetic force caused by wire 2 on wire 1
A 2.62 kg mass attached to a light string rotates on the horizontal, frictionless table. The radius of the circle is 0.4207 m, and string can support a mass of 14.70 kg before breaking.
An object initially at rest moves a distance x when a force F is applied for time t. How far will the object move of a force of 2F is applied for the same time t
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. The bird-watcher, however, hears a frequency of 1410 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
Bob can see the drai at the bottom center of a water filled pol (n=1.33) that is 3.6 m wide by light emerging 18 degrees above the horizontal
two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. How far should Rhoda compress the spring to score a direct hit
Suppose a 1.5 kg watermelon is hung from a string. A bolt with a mass of 30 grams is shot into the watermelon. Find the speed of the watermelon immediately after the arrow exits
Suppose a muon produced as a result of cosmic ray colliding with a nucleus in the upper atmosphere has a velocity v = 0.9500c. What distance is this in the muon's frame
Two balls are rolled off the tabletop that is 0.75m above the floor. how far does each ball travel horizontally before hitting the floor
A student doing an experiment pours 0.110kg of heated copper shot into a 0.355-kg aluminum calorimeter cup containing 0.170kg of water. What was the initial temperature of the shot
A model train moves along a horizontal circular track with a radius of 0.5 m. Starting from rest, What is the angular acceleration (in rad/s2) of the train
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