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Two carpenters are hammering at the same time, each at a different hammering frequency. The hammering frequency is the number of hammer blows per second. Every 4.6 s, both carpenters strike at the same instant, producing an effect very similar to a beat frequency. The first carpenter strikes a blow every 0.75 s. How many seconds elapse between the second carpenter's blows if the second carpenter hammers (a) more rapidly than the first carpenter, and (b) less rapidly than the first carpenter?
The frequency of light emitted by a toaster is 2.5 GHz. How many toaster photons are required to heat the water
one mole of the carbon-12 isotope contains 6.022 times 1023 atoms. what volume in m3 would be needed to store one mole
It takes a minimum distance of 48.96 m to stop a car moving at 12.0 m/s by applying the brakes (without locking the wheels). find the minimum stopping distance
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to four times the earth's radius of 6.38 multiply.gif 106 m.
A skier of mass 70kg starts on top of a frictionless hill of height 10m. Once the skier reaches the bottom the snow is mixed with sand and no longer frictionless. how far will the skier travel before he stops
what are the magnitude and direction of the x and y components of the electric field at the origin if there is a 2.0nc
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and magnitude of one charge is cut in half, what is the new force between them.
The helium atom has a volume of about 3x10^(-30) m^3. What fraction of a volume of helium gas at STP is actually occupied by molecules
A bullet is fired through a board 10.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board, Find the acceleration of the bullet as it passes through the board
A thin, uniform, rectangular sign hangs vertically above the doorof a shop. The sign is hinged to a stationary horizontal rod alongits top edge. Calculate its angular speed immediately after the impact
According to present theories of light, in some experiments light seems to be: 1)composed of particles which can neither be created nor destroyed. 2)a particle whose quantized energy depends on its velocity. 3)a wave that moves from one place to anot..
Consider a small car of mass 1236 kg and a large sport utility vehicle (SUV) of mass 3960 kg. The SUV is traveling at the speed limit (v = 33 m/s). Find the speed of the small car
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