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A runner moving at a velocity of 4m/s increases the velocity in a 2 s interval to a rate of 8 m/s. What is the rate of acceleration?
An electric dipole with dipole moment P=(3.24 i + 4.30 j)(1.56 x 10^-30 C*m) is in an electric field E=(4055 N/C) i, What is the potential energy of the electric dipole
Two long, parallel wires are separated by 3.0m. Each wire has a 25-Acurrent, but the currents are in opposite directions. Determine the magnitude of the net magnetic field midway between the wires.
The position of a particle moving along the x axis is given in cm by x = 8.25 + 2.50t^3, where t is in seconds. Consider the time interval t = 2.00 sec to t = 3.00 sec. Find the instantaneous velocity at t = 2.00sec
A defiblirator is used during a heart attact to restore theheart to its normal beating ppattern. How much charge moves during this time
A block is pushed up a 10 m long ramp that is oriented at 20 degrees with respect to the horizontal. find the work done by this force in pushing the block up the ramp
A block of mass 2.50 kg is pushed 2.20 m along a frictionlesshorizontal table by a constant 16.0 N force directed 25.0 degreesbelow the horizontal. Determine the work done by the applied force.
A ballerina spins initially at 1.06 revs/second when her arms are extended. She then draws in her arms to the body, find the work involved in increasing her angular speed
albert pujols is pitched a 0.145kg baseball at -39.ms and he hits the ball on a horizontal line drives straight back
A bullet with a mas of 10 g and an initial velocity of 800m/s penetrates 5 cm into a fixed block of wood before stopping. The average force on the buller by the wood is? A block of mass 4.25 kg hanging from a light string is struck by a projectile of..
A 80-g bullet is fired from a rifle having a barrel 0.582 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 14100 + 9100x - 24250x2, where x is i..
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 35o from the vertical. At what angle above the horizon does the friend see the sun
A ball hits the ground at 12m/s and bounces back at 8m/s. The ball is in contact with the ground for 0.2s. If the mass of the ball is 250g.
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