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Astronauts discover a planet orbiting another star. The mass of the star is 8.10 x 10^30 kg, the mass of the planet is 4.50x10^24 kg. the average distance between the planet and the star is 3.10x10^11 m. what is the force exerted by the star on the planet?
Find the maximum weight for the car if the springs should be compressed no more than 4.2 cm when the car is at rest
A proton is projected in the positive x direction into a region of uniform electric field = (-5.20E5) N/C at t = 0. The proton travels 6.20 cm as it comes to rest, Determine the initial speed of the proton
a crane is lifting a 500 kg payload straight up at a constant speed of 0.7 m/s. What is the power output of the crane
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
How many turns of wire would be required to make a 130-mH inductor out of a 29.0-cm-long air-filled solenoid with a diameter of 5.1cm ?
Starting from rest, a hammer thrower performs 4 revolutions in 4 seconds before releasing the hammer. What is the centripetal acceleration needed to rotate the hammer
The engineer takes 0.400 seconds to react, and then applies the brakes. At what rate must the passenger train then decelerate in order to avoid a collision?
A gymnast whose mass is 50.0 kg swings back and forth on a 4.0m long rope. What is her velocity at the bottom of the swing
What is the highest value of the magnetic force.
If the charge of the point charge in the figure were -2Q (instead of +Q), by what factor would the magnitude of the force on the point charge due to the dipole change.
A 75-kg man is riding in a 75-kg cart at 1.0 m/s. He jumps off in such a way as to land on the ground with no horizontal velocity
Three identical metal spheres of qA=+3.0C qB=-5.0C qC=+6.0C. What is the final charge on each one
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