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A simple pendulum is made from a 0.617 m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before it attains its greatest speed?
A fisherman notices that his boat is moving up and down periodically due to waves on the water. What is the velocity of the wave
Three forces in the x-y plane act on a 5.80 kg mass: 15.30 N directed at 59o, 12.20 N directed at 170o, Calculate the direction of the resultant force using the same sign convention as above
William Tell shoots an apple from his son's head. The speed of the 129-g arrow just before it strikes the apple is 21.2 m/s, how massive was the apple
A resistor draws 5.00A from an ideal 12.0-V battery. If this current is used to calculate the resistance, by what percent will the result be in error
A child is walking toward a wall at a speed of 1.00m/s in a direction at right angles to the wall. what is the frequency of the whistle
Two heat reservoirs at temperatures 190°C and 60°C, respectively, are brought into thermal contact, What is the change in the entropy of the two-reservoir system
A bird stands on an electric transmission line carrying 3100 A. of current. The line has 4.0E-05 ohm resistance per meter, What voltage does the bird feel
A container with a pressure of 3 atmospheres and a temperature of 200c contains 36 gram of nitrogen. what is the mean distance between molecules, assuming that the container is a cube
A container holds 1.4 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 8.2x10-3 kg bullet with a speed of 780 m/s
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 160 rad s^2.
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.7 cubic meters of sea water
As the earth rotates, what is the speed of a physics student in Miami, Florida, at latitude 26°? What is the speed of a physics student in Fairbanks
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