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A satellite is in an elliptical orbit at altitudes ranging from 250to 890 km. At the high point it's moving at 7.23 km/s. How fast isit moving at the low point?
A box starts from rest and is pushed a distance d = 1.25 meters along a frictionless ramp by a horizontal force, Fa, in 9.75 seconds. find the acceleration of the box as it slides up the ramp
The dry weight of a man is 845 N. When he is submerged underwater, the reading on the scale is only 43.2 N. What is the density of the man
Estimate the average force exerted by a shot-putter on a 7.0 kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s
Percy did 1000 joules of work and exerted a power of 2 watts. How many seconds did Percy take to do his work
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift.
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. What is the mass of the meter stick
you are kidnapped and put blindfolded in an elevator at the ground floor of a building. What is the approximate floor number your room is on
A 0.17- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
An arrow, starting from rest, leaves the bow with a speed of 26.5 m/s. If the average force exerted on the arrow by the bow were doubled, with what speed would the arrow leave the bow
A cylinder contains a mixture of helium ans argon gas inequlibrium at a temperature of 150 degrees. What is the average kinetic energy of each type of molecule? What is the rms speed of each type of molecule?
A carousel is initially at rest. At t=0 it is given a constant angular acceleration a=0.060 rad/s2, which increases its angular velocity for 8.0s. determine the angular velocity of the corousel
A parallel plate capacitor is attached to a battery that supplies a constant voltage. What happens to the energy stored in the capacitor
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