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Solve the following problem:
Problem I: At what height above the earth is the free-fall acceleration 25 % of its value at the surface? Assume Rearth = 6.37 × 106 m.
Problem II: What is the speed of a satellite orbiting at that height? Assume Mearth = 5.98 × 1024 kg.
Can someone please explain what the heck is going on above problem?
a child attempts to kick a ball over a wall 5.0 m tall 30.0 m away. if the child kicks the ball with an inital velocity
A dentist uses a mirror to examine a tooth that is 1.25 cm in front of the mirror. The image of the tooth is formed 5.0 cm behind the mirror. Determine the mirror's radius of curvature
A block is projected up a frictionless inclined plane with initial speed v0 = 8.50 m/s. The angle of incline is ? = 27.7°. How far up the plane does it go
The string will break if its tension exceeds 50-{rm N}. The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed. Find out the maximum speed the stone can attain without breaking the string.
Blocks with masses of 1.0 kg, 2.0 kg, and 3.0 kg are lined up in a row on a frictionless table. How much force does the 2.0 kg block exert on the 3.0 kg block
A pole vaulter vaults over the bar and falls onto thick padding. He lands with a speed of 9.8m/s; the padding then brings him to a stop in a time of 0.40s. What is the average force on his body due to the padding during that time interval?
What is the lift (in newtons) because of Bernoulli's principle on a wing of area 78m^2 if the air passes over the top and bottom surfaces at speeds of 260m/s and 150 m/s, respectively.
Besides the gravitational force, a 2.95-kg object is subjected to one other constant force. Determine the other force
A mass less string is pulled with a force 79 N to the right.The string is wrapped around a frictionless pully of non zeromoment of inertia and radius of .5 m and lifts a hanging block ofmass m=5kg. What is the moment of inertia of the pully
In what direction should the aircraft head?
A projected electric vehicle makes use of storage batteries as its source of energy. how many kilometers must the batteries be recharged
A flowerpot falls from a windowsill 25 m above a sidewalk. How fast is the flowerpot moving in 2 seconds
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