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A motorcycle rider starts from rest and goes 3.75 rad counterclockwise around a circular track in 12.3 seconds. Assuming she accelerates at a constant rate, what is her angular acceleration?
A projectile is launched from a high plateau so that it just clears a cliff's edge and falls to the valley floor below. How far from the cliff's edge was the projectile launched
What voltage must be applied to the 10.0 µF capacitor of a heart defibrillator to store 450 J in it? Find the amount of stored charge
A certain person in a typical conversation speaks at a sound level of 63 dB. The music at a certain rock concert reaches a sound level of 110 dB. How many times as great is the intensity of the music?
Two loudspeaker, 4.0 m apart and facing each other, play identical sounds of the same frequency. You stand halfway between them, where there is a max. of sound intensity. moving from this point toward one of the speakers, you encounter a min. of s..
An electron experiences the greatest force as it travels 1.02*10^6 m/s in a magnetic field when it is moving horizontally. The force is upward and of magnitude 1.75*10^-12 N. What is the magnitude of the magnetic field?
A lead ball is dropped into a lake from a diving board 5.6 above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 5 after it is released..
A ray of light is incident on the surface of a block of clear ice at an angle of 35.0° with the normal. obtain the angle between the reflected and refracted light
A man of mass M kg lying on a surface of negligible friction shoves a stone of mass m kg away from himself,what speed does the man acquire as a result
A particle moves along the x axis according to the equation x = 50t + 10t2, where x is in meters and t is in seconds. (a) Calculate the average velocity of the particle during the first 3.0 s of its motion. ? m/s (b) Calculate the instantaneous veloc..
A container of 1m^3 contains one cubic meter of liquid water at a temperature of 0 degrees Celsius. calculate heat current in radiation leaving the cube
A proton and electron moving with the same speed enter the magnetic field of the earth at the same angle, what type of trajectory will each particle follow in the earth's magnetic field
consider a head-on elastic collision of two balls. ball a moving at 45 ms collides with ball b which is initially at
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