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A 54 kilogram ice skater is moving at 4.01 meter per second when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.808 meter around the pole.
(a) Find the force exerted by horizontal rope on her arms.
(b) Obtain what is the ratio of this force to her weight?
a 25 microf capacitor charged to 4.2 kv and a second 50 microf capacitor charged to 6.3 kv are connected to each other
Two identical objects each hold a net charge of q = 2e. If the gravitational force among the two objects exactly cancels the electrostatic force among the objects, what is the mass of each object?
the rope and pulley have negligible mass and the pulley is frictionless. the coefficient of kinetic friction between
A wave has a wavelength of 456m and a frequency of 200Hz. What is the period of the wave? What is the wave speed?
What is clowns total displacement
A cosmic ray travels 60 km through the earth's atmosphere in 380?s, How long does the journey take according to the cosmic ray
A thin, uniform, rectangular sign hangs vertically above the doorof a shop. The sign is hinged to a stationary horizontal rod alongits top edge. Calculate its angular speed immediately after the impact
the roller-coaster car is dragged up at the highest point where it is released passing the highest point with speed of
A robot probe drops a camera off the rim of the 389 m high cliff on Mars, where the free fall acceleration is 3.7 m/s^2. Find out velocity with which it hits the ground and the time required for it to reach the ground.
A ball is dropped from a height of 63 centimeters andrebounds to a height of 40 centimeters. Calculate the coefficient of elasticity for the ball
Two point charges of equal magnitude are d = 8.0 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of E =45 N/C. Find the magnitude of the charges
question1marilyn m and her identical in every way twin sister sheila s are riding on a merry-go-round revolving at a
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