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a gymnast is performing a floor routine. In a tumbling run she spins through the air, increaseing her angular velocity from 3.00 to 5.00 rev/s while rotating through one -half of a revolution. How much time does this maneuver take?
Three charged particles are placed at each of three corners of an equilateral triangle whose sides are of length 2.8 . Two of the particles have a negative charge: = -6.7 and = -13.4 . The remaining particle has a positive charge, = 8.0 . What is ..
An automobile radiator is filled to the brim with 45 liters of glycerin coolant at 10 degrees C. How much glycerin overflows from the radiator as a result of expansion
At the bottom of its path, the ball strikes a 3.80 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find out the speed of the ball just after the collision ?
A laser used to repair a detached retina has wavelength of 532nm. How many photons are in each pulse
An astronaut in a satellite says she can just barely resolve two point sources on the Earth, 110km below. Assume λ=540nm, and the pupil diameter of the astronaut's eye to be 5.20mm.
A 55.0 kg circus performer oscillates up and down at the end of a long elastic rope at a rate of once every 8s. The elastic rope obeys Hooke's Law. By how much is rope extended beyond its unloaded length while the performer hangs at rest?
Two children stand on opposite sides of a merry-go-round of diameter 6.0 m, Calculate the magnitude of the Coriolis force acting on the moving ball due to the rotation of the merry-go-round
How large does the radius R of the dish have to be to attain electric field vector amplitude of 0.1mV/m at the receiver.
A small box of mass 10 kg is placed on top of a large box with a mass 4 times that of the small box. find the magnitude of the frictional force acting on the small box
Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, What is the acceleration of the system
The magnitude of the vector is 45.0 units and points in the direction 386 counter clockwise from the positive x-axis. Calculate the x-component of this vector.
The He-Ne laser shines through a slit in the diffraction plate that is 50 cm from the screen. What fringe spacing would you expect for slits E and F if the stated slit spacing is correct? What difference must there be between the patters produced ..
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