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A spring (k=100 N/m) is compressed by 0.05 m. When it releases, it spins up a solid disc (m = 0.1 kg, r =0.03 m) that is initially at rest. What angular speed does the disc obtain?
A 190? resistor is connected to an AC source withE0 = 14V. What is the peak current through the resistor if the emf frequency is 100 Hz
compass needle points 25 degrees E of N outdoors. However, as it is placed 17 cm to the east of a vertical wire inside a building it points 61 degrees E of N. What is the magnitude of the current in the wire? The earth field there is 0.50X10^-4 T ..
question1a jet plane w a constant speed along a straight line at an angle 30 degrees above horizontal. the plane is
A sinusoidal wave of wavelength 1.95m and amplitude of 0.125m travels on a string with a speed of 1.12m/s to the right. calculate the maximum speed of any element in the string
a u.s. 20 gold piece has a mass of 33.44 grams and displaces 1.935 cm3 of water. if the coin is known to consist of
A train is traveling up a 3.3 incline at a speed of 3 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? How far did the last car travel before momentarily coming..
An ideal gas expands at a constant total pressure of 3.0 atm from 400 mL to 600 mL. heat then flows out of the gas at a constant volume, and the pressure and temperature are allowed to drop until the temperature reaches its original value.
The electrons in the beam of a television tube have a kinetic energy of 3.26 × 10-15 J. What is the acceleration of an electron due to this field component
A light string is wrapped around the outer rim of a solid uniform cylinder of diameter 75.0 cm that can rotate without friction about an axle through its center. What is the mass of the cylinder
A circular disc of mass 10 kg is suspended by a wire attached to its centre. Determine the torsional spring constant of the wire
A boulder has a volume of 1 m3 and a mass of 5000 kg. what will be the effective mass of the boulder
Have you ever listened for an approaching train by kneeling next to a railroad track and putting your ear to the rail. how many times greater is the speed of sound in the rail than in the air
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