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Two pure tones are sounded together. The periods of their pressure variations are 0.0151 s and 0.0159 s, measured with respect to atmospheric pressure. What is the beat frequency?
A flight attendant pulls her 69N flight bag a distance of 246m along a level airport floor at a constant velocity. The force she exerts is 37N at an angle of 58° above the horizontal. Find the coefficient of kinetic friction between flight bag and..
The electric potential at a position located a distance of 18.6 mm from a positive point charge of 7.50×10-9C and 14.8 mm from a second point charge is 1.10 kV
Loretta made it known just because someone comes from poverty does not mean this is where you have to live your whole life. She was an amazing women and an inspiration to many.
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.46 m radius and is 2 m high. How much energy is lost through the walls of the hot water heater
A rocket ship at rest in space gives a short blast of its engine, firing 90 kg of exhaust gas out the back end with an average velocity of 700 m/s.
Suppose two alpha particles were held together so they were just touching. Estimate the electrostatic repulsive force each would exert on the other
Suppose that all movement occurs in a straight line up and down along the y axis. Find out the muzzle velocity of the ball (i.e., the velocity of the ball at spring's equilibrium position).
A certain type of laser emits light that has a frequency of 5.6 x 10^14 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 3.9 x 10-11 s.
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
The third floor of a house is 6.00 m above street level. How much work is essential to move a 159 kg refrigerator to the third floor.
A small glass bead has been charged to + 10nC. A metal ball bearing 1.90cm above the bead feels a 1.20×10-2 N downward electric force. What is the charge on ball bearing.
A 3.0-cm-diameter parallel-plate capacitor with a spacing of 0.300 mm is charged to 500 V. What is the total energy stored in the electric field
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