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A 64.0 kg person, standing on a diving board, dives straight down into the water. Just before striking the water, her speed is 6.40 m/s. At a time of 1.60 s after she enters the water, her speed is reduced to 1.50 m/s. What is the net average force (magnitude and direction) that acts on her when she is in the water?
A metal disk with a radius of 10cm and a mass of 6 kg has a hole in the center and is nailed to a wooden post. What is the moment of inertia of the disk
How fast would it be moving after it had fallen a distance of 0.010-m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
A size-5 soccer ball of diameter 22.6 and mass 426 rolls up a hill without slipping, reaching a maximum height of 3.50 above the base of the hill. At what rate was it rotating at the base of the hill
a extraction plant uses an applied emf of 3.0v and a current of 310000 a. one tonne of aluminium is extracted after 16
A flashlight uses batteries that add up to 4.5 V and has a power output of 0.56 W. How much current is drawn from the batteries
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.5 mm)sin(28.0x -4.0 s-1 * t+0.350 rad),with x in meters and t in seconds. what is the resultant amplitude of the two wa..
The Flux of the E-Field is a scalar. If the net charge enclosed by a Gaussian Surface is zero, then byGauss' Law, the E-Field is zero at all points on the surface.
A particle with a mass of 1.5×10?5 kg and a charge of +2.8 microC is released in a (parallel plate) uniform horizontal electric field of 15 N/C. How far horizontally does the particle travel in 0.60s
A 0.58 kg toy airplane is suspended from the ceiling by a 1.6 m long cord and rotates in a horizontal circle. If the cord makes an angle of 35 degrees with the vertical.
q. after the near spacecraft passed mathilde on some occasions rocket propellant was expelled to adjust the spacecrafts
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that three different wavelengths are observed, What is the wavelength of the incident beam
A 7.00 kg bowling ball collides head-on with a 2.00 kg bowlingpin, which was originally at rest. The pin flies forward with aspeed of 3.00 m/s. what was the initial speed of the ball
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