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Q1. A car takes 9 s to go from v = 0 to v = 55 m/s at about constant acceleration. If you wish to find out the distance travelled using the equation d = 1/2 at2, what value must you use for a?
Q2. A 24 {rm g}, 3-cm-diameter thin, hollow sphere rotates at 30rpm about the vertical, frictionless axis during its center. A 5g bug stands at the top of the sphere. He then walks along the surface of sphere until he reaches its "equator." 30 {rm rpm} about a vertical, frictionless axis through its center. A 4 {rm g} bug stands at the top of the sphere. He next walks along surface of the sphere until he reaches its "equator."
When he reaches equator, the sphere is rotating at how many rpm?
What is corresponding free energy change
Create a graph corresponding to the stone vertical velocity
What is new angular speed of the merry-go-round
Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V.
She notices a group of workers down the walkway who have suddenly blocked her path, and she makes a quick stop in 1.8 seconds. What is Suzies average acceleration
Compute magnitude and direction of magnetic field produced by the moving belt at a point just above its surface .
A water pipe is inclined 32.0° below the horizontal. The radius of the pipe at the upper end is 3.00 cm. If the gauge pressure at a point at the upper end is 0.117 atm, what is the gauge pressure at a point 2.65 m downstream, where the pipe has narro..
A 12 kg weather rocket generates a thrust of 250 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 560 N/m, is anchored to the ground. What is the rocket's speed while the s..
Calculate torques about an axis
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
Find out the speed of a 56.7 kg thrill seeker at the bottom of the slide, assume no friction. If the thrill seeker has a speed of 24.1 m/s at the bottom, find out the change in mechanical energy due to friction.
Coefficient of kinetic friction between tires and road
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