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(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 6x109 kg and its center of mass is 28.0 m above the surrounding ground?
(b) What is the ratio of this energy to the daily food intake of a person (1.2 x 10^7 J)?
A test charge is located at a distance of 2.5 × 10-2 m from a charge of 6.4 × 10-5 coulombs. Find what is the electric field at the test charge
A positive charge of 1.100 µC is located in a uniform field of 1.00 x 105 N/C. How close are the two charges
Suppose your favorite FM radio station broadcasts at a frequency of 107.3 MHz. Estimate What is the wavelength of this signal
the weight of a body varies inversely with the square of its distance from the center of earth. assuming that the
a find the resistance that must be placed in series with a 10.0 galvanometer having a 125 acircmicroa sensitivity to
A force of 315 N is applied horizontally to a wooden crate in order to displac eit 35.0 m accorss a level surface at a constant velocity. As a result of this work the crate's internal energy is increased by an amount equal to 14 percent of the cra..
An insulated piston-cylinder device contains 3 liters of saturated liquid water at a pressure of 150 kPa. A current of 10 Amps flows for 45 minutes through an electrical resistor that is placed in the water, while the water is stirred by a paddle-..
A 3000kg space vehicle, initially at rest, falls vertically from a height of 3100km above the Earth's surface. Determine how much work is done by the force of gravity
Spring loaded gun fires a projectile to a heighten when fired straight up. What max height will the projectile reach when fired at an angle 45° from the vertical
A thermos contains 125 cm3 of coffee at 85° C. To cool the coffee, you drop two 13-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of the coffee? Treat the coffee as if it were wa..
you illuminate a slit of width 0.0575 mm with light of wavelength 715 nm and observe the resulting diffraction pattern
A beam is attached to a vertical wall with a hinge so that the beam can be supported horizontally with a wire and a sign can hang below. What is the tension in the wire holding the sign
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