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A 5000kg satellite orbits earth at a distance of 35,000km above the surface of the earth. Calculate its velocity and its period.
A 61 kg rock with a volume of 33 L is completely submerged in water. The density of water is 1 kg/L. What mass of water is displaced by the rock
Newton's apple was a sphere with a 5cm radius and density of 850kg/m^3. Its drag coefficient is 0.60 and the density of air is 1.2kg/m^3. Find the apple' terminal velocity
f the U.S. demand for electricity continues to grow at about 2% per year, how many more MWe would be needed to meet that demand in 10 years, What fraction of our present use of natural gas is this
A 1.50g penny with density 7170kg/m3 is released just below the surface of a pool of water. What's its initial downward acceleration
An Olympic skier coasts down a slope with an angle of inclination of 44. What is the acceleration of the skier
The mass of an electron is 9.11*10^-31kg. What is the mass of one negative coulomb electron
question1two train whistles have an identical frequency of 157 hz. train a is motionless in the station and sounds its
What are the magnitudes of forces that act upon links? What is the tension in the rope and one end of the catenary is fixed to the left pole. Massless rope of length l connects second end of the catenary and the second pole.
Two kids sit on a 3.0 meter long seesaw. Kid 1 is 50.0kg and kid 2 is 40.0kg. how far from the pivot on the right side should kid 1 sit to balance the seesaw
A 100g wire is held under a tension of 250N with one end at x = 0 and other x = 10m. At time t = 0, pulse 1 is sent along the wire from the end at x = 10 m. At time t = 30 ms, pulse 2 is sent along the wire from the x = 0. At what position x do the..
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
A 1000 kg roller coaster car starts from rest from a hilltop 80.0 m above the ground, find the average frictional force between the car's wheels and the track
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