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Calculate what is the total charge (in coulombs) on all the electrons in 7 kilogram of water (H2O)?
question a 75kg student is standing atop a spring in an elevator that is accelerating upward at 3.0ms2 the spring
A box of mass of mass 2 kg is placed on a spring such that when the box is released, the spring will push the box directly upward. what is the maximum height the box will reach
a 7.75- g bullet from a 9-mm pistol has a velocity of 397.0 ms.it strikes the 0.785- kg block of a ballistic pendulum
A bullet of mass m is fired with speed vo toward a steel block of mass M which is hanging from a massless rod of length D. After avery short impact, the bullet bounces backward with the speed vfwhile the block swings up to a height h.
an airplane is traveling at 117 mph relative to the air 13 degrees e of n at an altitude of 5000 ft. it encounters a
Which of the following must be true if we are to infer (calculate) a star's luminosity directly from the inverse square law for light.
A spring is first stretched 2.0 cm from its unstressed length. It is then stretched an extra 1.8 cm. How does the work required for the second stretch compare to the work needed for the first stretch (give a ratio of second to first)? (Be sure you ar..
An artificial satellite in a circular orbit around the Sun has a period of eight years. Decide the ratio of the satellite's orbital radius about the Sun to the earth's orbital radius about the Sun. Suppose that the earth's orbit about the Sun is circ..
A playground is on the flat roof of a city school, 5 m above the street below (see figure). The vertical wall of the building is h = 6.50 m high, Find the speed at which the ball was launched
A 2.0kg solid cylinder (radius = 0.10m , length = 0.70m ) is released from rest at the top of a ramp and allowed to roll without slipping. When the cylinder reaches the bottom of the ramp, what is its total kinetic energy
Light from a laser beam with a wavelength of 600 nm passes through a narrow single slit and observed on a screen 1.5 m behind the slit. The first minimum of the diffraction pattern is 1.5 cm from the central maximum.
You will find in Chapter 39 that the electrons cannot move indefinite orbits within atoms, like the planets in our solar system. What would be the photon energy of this light
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