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A child slides down a snow-covered slope on a sled. At the top of the hill, her mother gives her a push at a speed of 1.5 m/s to get her started. The frictional force acting on the sled is one-fifth of the combined weight of the child and the sled. If she travels for a distance of 23.8 m and her speed at the bottom is 4.3 m/s, calculate the angle that the hill makes with the horizontal.
A roller-coaster car has a mass of 504 kg when fully loaded with passengers Point B of the rollercoaster has a radius of 15.0m, What is the maximum speed the vehicle can have
Neal (75 kg), a beginning skier, gets a little too ambitious and loses control on the slope. What is their speed immediately after the collision
A uniform rod of mass 3.05×10^-2?2kg and length 0.370m rotates in a horizontal plane about a fixed axis through its center, compute the angular speed of the rod after the rings leave it
Explain why do we place guards over capacitors and where does the guard voltage come into play when using an analogue L-C meter to probe the capacitance?
A 0.240 kg block on a vertical spring with spring constant of 4.20 103 N/m is pushed downward, compressing the spring 0.045 m. How high does it rise above the point of release
A golf ball of mass 0.045 kg is hit off the tee at a speed of 32m/s. Find the average force exerted on the ball by the golf club
The armature of an ac generator is a rectangular coil, 2.0 cm by 6.0 cm with 80 turns. at what angular speed is the armature rotating
How much work did the movers do (horizontally) pushing a 190-{rm kg} crate 11.2 m across a rough floor without acceleration, if effective coefficient of friction was 0.60.
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 10 s, it rotates 2 revolutions. What was the angular acceleration during this time
The performers in a marching band move in straight rows, maintaining constant side-to-side spacing between them. what is the speed of the outermost marcher
A classroom demonstration is done with an Atwood machine. The masses are m1 = 1.0 kg and m2 = 1.14 kg. what is the acceleration of gravity at that place
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
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