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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 are the original charges on each sphere
Find out the tension in the rope
What is magnitude of the unknown force
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.
What is magnitude of the linear acceleration of the hoop . Elucidate using Newton's Second Law of Motion, why you can throw a golf ball further than a bowling ball, still though you throw both at the similar angle and with the same amount of force.
A 18.0 kg block is dragged over a rough, horizontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizontal. The block is displaced 10.8 m, and the coefficient of kinetic friction is 0.149.
Horse races once around a circular track in a time of 176 s, with a speed of 26 m/s. What is the radius of the track.
If an average frequency emitted by a 200,-,rm W light bulb is 5.00 times 10^{14} , {rm Hz}, and 10.0 percent of the input power is emitted as visible light, approximately how many visible-light photons are emitted per second .
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that three different wave-lengths are observed while the hydrogen relaxes back to the ground state. What is the wavelength of the incident beam.
A 3.10-m-long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 73.0 kg construction worker stands at the far end of the beam. What is the magnitude of torque abou..
What is amplitude of the electric component of the signal
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
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