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A horizontal block and spring system with negligible friction is initially in equilibrium. The mass of the block is 0.160 kg. Theblock is pulled to one side so that its initial displacement is0.150 m. When the block is released the system oscillates with aperiod of 1.73 s. Calculate the elastic constant of the spring inNewtons/Meter
Sit on a rotating chair. Slowly twist your body in one direction and after that rapidly twist it in the other. What is going to happen? Is angular momentum conserved and if not why.
A 0.477 kg block of wood hangs from the ceiling by a string, and a 0.0680 kg wad of putty is thrown straight upward, How high does the putty-block-system rise above the original position of the block
A hollow cylinder (hoop) is rolling on a horizontal surface at speed 4.3 when it reaches a 11incline. How far up the incline will it go
A flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s. If the coil has a total resistance of ..
You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64 m high. How far from the base of the cliff should you look for the keys
a boy hears an eco of his own voice from a distant hill after 1s. The speed of the sound is 340m/s. What is the distance of the hill from the boy
A wheel starts at rest and takes 3.00 s to rotate 37.0 revolutions at which point its angular velocity is 98.0 rad/s. What is the constant angular acceleration of the wheel
A copper wire with a cross sectional area of 3.00 mm^2 and a length of 2.00 m at 20.0 degrees C is connected to a 25.0 V battery, what is the resistance at 20.0 degrees C
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial direction
A one loop circuit is connected thus: A 3.0 V source, with the + side connected to a 10 ohm resistor, how much power does the bulb dissipate
A satellite moves in a circular earth orbit that has a radius of 8.38 x 106 m. A model airplane is flying on a 22.8-m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane an..
If a rocket's exhaust speed is 160 m/s relative to the rocket, what fraction of its initial mass must be ejected to increase the rocket's speed by 50 m/s
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