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A boy tosses a football upward. If the football rises a vertical distance of 3.4 m and the boy catches it at the same point he released it, what is the velocity of the ball just before he catches it? (Assume upward is the positive direction.)
A thin, cylindrical rod L = 20.6 cm long with a mass m = 1.20 kg has a ball of diameter d = 6.00 cm and mass M = 2.00 kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top as shown in the figure be..
A 4.00 meter long rod is hinged at one end. The rod is initially held in the horizontal position, and then released as the free end is allowed to fall. Determine the angular acceleration as it is released
A pulley, with a rotational inertia of3.2×10-3kg m2 about its axleand a radius of 8.0 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F =0.46t + 0.32t2, where F is in newtons if t is given inseconds..
Assume this asteroid has the shape of a sphere. A rock sitting on the surface of the asteroid has a weight of 100 newtons. How is the mass of the rock affected by its change in position
Two circuits contain an emf produced by a moving metal rod, likethat shown in the drawing. The speed of the rod is the same in eachcircuit, but the bulb in circuit 1 has one-half the resistance of the bulb in circuit 2.
An L-R-C series circuit is connected to a120?Hz ac source that has vrms = 80.0V. What average power is delivered to the circuit by the source
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 9350 m/s and protons move to the left at 1.230 × 103 m/s.
An engineer is given the job of designing the water system for a tall building. He decides to locate the pumps at ground level and feed the entire building from there. what must the pressure be at pump level
What is the momentum of a 950 kg sports car traveling down the road at a speed of 26 m/s
Given a typical wave function describing the state of a particle, how would you determine weather the function is properly normalized while being precise and specific and by providing math expressions?
A light ray is incident on the surface of water (n= 1.33) at an angle of 60° relative to the normal to the surface. The angle of the refracted wave is
Two guitarists attempt to play the same note of wavelength 6.50cm at the same time, What is the frequency of the beat these musicians hear when they play together
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