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A liquid is used to make a mercury-type barometer. The barometer is intended for spacefaring astronauts. At the surface of the earth, the column of liquid rises to a height of 2185 mm, but on the surface of Planet X, where the acceleration due to gravity is one-fourth of its value on the earth, the column rises to only 725 mm. Find the (a) the density of the liquid, (b) the atmospheric pressure at the surface of Planet X.
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
Two waves are traveling in the same direction along a stretched string. The waves are 45.0° out of phase. Find the amplitude of the resultant wave
A space station is constructed in the shape of a wheel 16 rm m in diameter, with essentially all of its 6.0×10^5 rm kg mass at the rim.
Huygens' principle (first described by the Dutch scientist Christiaan Huygens in 1678) uses geometry to determine the shape of a wavefront at a time.
Tritium with a half-life of 12.3 years is used to verify the age of expensive brandies. how many years ago was it produced
Assume the magnitude of the electric field on each face of the cube of edge L = 1.01 m, Determine the net electic flux through the cube
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = -28.0 cm). How far is the object from the converging lens
a circular metal plate of radius 0.2m has 1010 excess electrons uniformly distributed over its surfaces. what is the
a single-turn square loop of side l is centered on the axis of a long solenoid. in addition the plane of the square
A rainbow viewed from an airplane may form a complete circle. Where will the shadow of the airplane appear? Explain
The coil in a 60-Hz ac generator has 125 turns, each having an area of 3.0*10^-2 m^2, What is the RMS output voltage
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the magnitude of the acceleration of a satellite in a geosynchronous orbit
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