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A 62.4 kg ice skater moving to the right with a velocity of 2.67 m/s throws a 0.198 kg snow ball to the right with a velocity of 39.7 m/s relative to the ground. t is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and the ice. Answer in units of m/s
A second skater initially at rest with a mass of 58.4 kg catches the snowball. What is the velocity of the second skater after catching the snowball in a perfectly inelastic collision? Answer in units of m/s
A 270 m wide river flows due east at a uniform speed of 2.30 m/s. A boat with the speed of 8.4 m/s relative to water leaves the south bank pointed in a direction 38o west of north. What is (a) magnitude and (b) direction of the boat's velocity rel..
Two automobiles, each of mass 1000 kg, are moving at the same speed, 21 m/s, when they have an inelastic collision. In what direction and at what speed does the wreckage move if one car was driving north and one east?
On the Moon's surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected, What is the difference in travel time for light that travels only through space to the moon and back and light that travels through ..
An intern pushes a 72 kg patient on a 15 kg gurney, producing an acceleration of 0.60 m/s2. How much work does the intern do by pushing the patient and gurney through a distance of 2.5 m
How several meters away is a cliff if an echo is heard 0.587 s after the original sound? Assume that sound traveled at 343 m/s on that day.
Find the resultant force of a tank that is entirely filled with an incompressible fluid and has a piston at end. Side going into take F=100N
Two wires, each of length 1.2 m, are stretched between two fixed supports. Find the speed at which the individual waves travel on each wire
A particular organic molecule forms an electric dipole by possessing an effective charge separation of 0.177 nm for a pair of ±1.60 × 10-19-C charges. find the magnitude of the molecule\'s electric dipole moment
A 0.246-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 36.1%, What is the average current supplied to the car\'s motor?
A Carnot engine extracts 550 J of heat from a high-temperature reservoir during each cycle, compute the efficiency of the engine
Illustrate what is the maximum load that can be hung from a copper wire of diameter 0.46 mm? Answer in units of N.
A block (mass = 1.8 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.2 x 10-3 kg·m2), find the angular acceleration of the pulley
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