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The linear acceleration of the center of mass of a yo-yo is 2.0m/s^2 as it rolls by gravity down its string. If the mass of the yo-yo is 120 g and the radius of its axle is 3.0 mm,
(a) what is its rotational inertia?
(b) what is its linear acceleration as it climbs back up the sting?
After inverting the tube 100 times, the temperature of the lead shot is found to have increased by 30C
A 0.45kg piece of putty is dropped from a height of 2.5m above a flat surface. find the magnitude of the average force exerted on the putty
Objects with masses of 145kg and a 445kg are separated by 0.330m. At what position (other than infinitely remote ones) can the 32kg object be placed so as to experience the net force of zero.
You have a ball on a wire that is twirled in a circular orbit with a radius of 3.8 m, and the centripetal force acting on the ball, What is the speed of the ball in orbit
What is the total charge of all the electrons in a 14 kg bar of zinc? (Zinc has 30 electrons per atom and an atomic mass of 65 u.)
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
A certain automobile engine is performing work at the rate of 33900 W (45 hp) with an efficiency of 27%
The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.29 mA. In one hour of operation How much charge flows in the circuit
The air-conditioning system of a department store is designed to maintain a pressure of 0.22 in. find the net force due to pressure on a rectangular display window
Suppose the emf of a coil rotating in a magnetic field is zero at t = 0 , and increases to its first peak at t = 0.11 ms. What is the angular velocity of the coil
A capacitor with an initial potential difference of 100 V is discharged through a resistor when a switch between them is closed at t = 0. At t = 10.0 s, What is the time constant of the circuit
A ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. What impulse was given to the ball by the floor
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