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In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 3.0 m/s, but because of the kinetic friction between the puck and ice, the puck travels only half the distance between the players before coming to rest. Assuming that the ice's friction is the same everywhere, what minimum initial speed did the player need to give the puck in order for it to reach the teammate?
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find (a) the max height of the projectile
A volleyball is spiked so that its incoming velocity of +4.2 m/s is changed to an outgoing velocity of -24 m/s. What impulse does the player apply to the ball
Once free of this area, it speeds up to 13 m/s in 8 {rm s}. At the edge of town, driver again accelerates, with the same acceleration, for another 16 {rm s} to reach a higher cruising speed.
What is Lagrangian for the system
An undamped 1.42-kg horizontal spring oscillator has a spring constant of 29.9 N/m. While oscillating, it is found to have a speed of 2.53 m/s as it passes through its equilibrium positio
Two soccer players start from rest, 47 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
q1. a staging that weighs 440 n supports two painters one 110 n and the other 460 n. the reading in the left scale is
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy, What is the orbital period of the faster planet, in years
A tire is filled with air at 15 oC to a gauge pressure of 220 kPa. If the tire reaches a temperature of 38 oC, How much energy do you need to boil off 2 kg block of ice
Elaine went to her outside faucet to fill a 0.0189-m3 bucket with water to wash her car. How long does it take to fill the bucket completely
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor and a cloud at an altitude of 680m to be the other plate. Assume the surface area of the cloud to be the same as the area of a square that ..
three capacitor , with capacitance of c1=4.0mf,c2=3.0mf ,c3=2.0mf , are connected to a 24v source (c1 is in series with c2 but c2 and c3 are in parallel, what is the equivalent capacitance of the three capacitors
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