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1.4m/s is a typical walking speed. At what temperature would nitrogen molecules have an rms speed of 1.4 m/s?
A 8.40 kg object oscillates at the end of a vertical spring that has a spring constant of 2.45 multiply.gif 104 N/m. Calculate the frequency of the dampened oscillation
A standing observer perceives a train whistle to have a frequency of 300 Hz. calculate the frequency of the sound waves emitted from the train
When ultraviolet light with a wavelength of 250 nm is incident on a particular metal surface, What is the threshold frequency for this particular metal
A box with a mass of 6 kg is lifted (without acceleration) by a height of 6.0 m in order to place it upon the shelf of a closet.
The difference in electric potential between a thunder cloud and the ground is 1.58 108 V, Determine the change in electric potential energy of one of the electrons that move to the cloud
A school yard teeter-totter with a total length of 5.2m and a mass of 36kg is pivoted at its center. A 19 kg child sits on one end of the teeter-totter.
What is the speed of crate hit ground
Photons of wavelength 65.0 pm are Compton-scattered from a free electron which picks up a kinetic energy of 0.95 keV from the collision
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. compute the mass of the aluminum cup
A string requires a 186 N force in order to break. A 1.50 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.90 m. What is the highest speed that this mass can be whirled without breaking the string.
One of the new events in the 2002 Winter Olympics was the sport of skeleton (see photo), In the absence of nonconservative forces, such as friction and air resistance, what would be the speed of a rider at the bottom of the track
A mass of 2 kg is attached to a spring with spring constant k=100 N/m. What is the period of oscillation for the mass
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