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A satellite is in a circular orbit very close to the surface of a spherical planet. The period of the orbit is 2.54 hours. Determine what is density of the planet? Suppose that the planet has a uniform density.
A wave on a string is described by the relation y = A sin(47t - 0.023x), where t is measured in seconds and x in meters, with A = 0.18 m, Find the frequency of the wave
A horizontal steel bar, 4m long and 2 cm diameter is imbedded in two concrete walls. A 2000 kg mass is hung from its center. By how much does the center sag
Ball 1, with a mass of 140 g and traveling at 12.0 m/s, collides head on with ball 2, which has a mass of 300 g and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic
A beam of light in air strikes a glass lab at common incidence. The glass slab has an index of refraction of 1.50. (a) About what percentage of the incident light intensity is transmitted through the slab (in one side or out the other)? (b) Repeat Pa..
What is the maximum displacement of the bridge deck?
A hydraulic jack is made with a small piston 1.2 cm in diameter that is used to move a large piston 6.1 cm in diameter. how heavy a load can he lift with the jack
When light of wavelength 360 nm falls on a lithium surface, electrons having a maximum kinetic energy of 1.15 eV are emitted. Discover values for the following. The work function of lithium. The cut-off wavelength
An aluminum sphere is 5.50 cm in radius. What is its volume expansion coefficient if it increases in volume 2.00 cm3 when heated from 100 oC to 151oC
An elevator cable winds on a drum of radius 80.0 cm that is connected to a motor. If the elevator moves down 9.0 m, how many revolutions has the drum made
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k and a hot reservoir, what is the temperature of the hot reservoir?
A 64.0-kg runner has a speed of 5.50 m/s at one instant during a long-distance event. by what factor does his kinetic energy change
A cat jumps off a piano that is 1.3 meters high. How far from the edge of the piano does the cat strikes the floor
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