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A block of mass 12.50 g on the end of spring undergoes simple harmonic motion with a frequency of 3.50 Hz. If the motion of the mass has an initial amplitude of 5.00 cm what is its maximum speed?. The amplitude decreases to 1.087 cm in 4.57 s, what is the damping constant for the system?
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.0 MJ, What is the moment of inertia of the flywheel
A 50.0 g copper calorimeter contains 200 g of water at 20.0°C. How much steam must be condensed into the water if the final temperature of the system
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the distance she travels before she catches him
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
After a 0.250-kg rubber ball is dropped from a height of 1.80 m, it bounces off a concrete floor and rebounds to a height of 1.20 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. magnitude? direction?
The water was originally at 0°C. The specific heat of water = 1.00 kcal/kg×°C, The original temperature of the ice was:
A 1.8 hp electric motor provides a force of 382 N to maintain a constant speed for a long rope attached to a pulley lifting a bucket of coal from a mining shaft
a variable capacitor consists of two thin coaxial metal cylinders of radii a and b with b-altlta free to move with
A man stands on a frictionless platform that is rotating with an angular speed of 3.3 rad/s; his arms are outstretched and he holds a weight in each hand. find the change of the kinetic energy when the man moves his arms
Consider an aircraft powered by a turbojet engine that has a pressure ratio of 12. The aircraft is stationary on the ground, held in position by its brakes. determine the force that must be applied on the brakes to hold the plane stationary
The position of a 0.64-kg mass undergoing simple harmonic motion is given by x = (0.160 m) cos (pt/16). What is the maximum net force on the mass as it oscillates
A 330 ohm (330 ?) resistor is connected to an unknown voltage source. The Voltage- Current Sensor measures a current of 0.50 amps (0.50 A). What is the voltage of the voltage source
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