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Question: A mass of 2kg travels at 4m s-1 towards a wall. It hits the wall and bounces directly back, now traveling at 2m s-1 away from it. By how much does the momentum of the mass change in this collision?
a laser beam is reflected by a plane mirror. it is observed that the angle between the incident and reflected beams is
A capacitor is formed from a hollow copper sphere of outer radius 45.4 cm and inner radius 36.3 cm. Compute the capacitance of the sphere in microfarads.
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.602 and the coefficient of kinetic friction is 0.327. How much force is needed to begin moving the book
2.0A current in 560 turns primary coil of a transformer causes 14 A to flow in the secondary coil. How many turns are in the secondary coil
An amateur astronomer decides to build a telescope from a discarded pair of eyeglasses. One of the lenses has a refractive power of 11 diopters, while the other has a refractive power of 1.1 diopters.
A satellite is in a 95.0min period circular orbit 400km above Earth's surface. Find its centripetal acceleration
Two cars travel in the same direction along a straight highway, How far must the faster car travel before it has a 15-min lead on the slower car
A jet flying at 206.0 km/hr travels between two cities in 1.5 hour(s). A turboprop flying the same route takes 5.5 hours. What is the speed of the turboprop?
What is its angular speed 0.1 seconds later?
Illustrate what is the average force exerted on the ball by the bat? Neglect the weight of the bat, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction.
A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.
A 120g ball moving at .30 m/s in the + x-direction is subject to a 0.15N force in the - y-direction for 3.0s. Find the magnitude of the ball's momentum change
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