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An automobile moves on a level horizontal surface in a circle radius 30 m. The coefficient of friction between tires and road is .50. Find the maximum speed with which car can round the curve?
You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. find the minimum charge required to pick up the tissue paper
An unknown mass of silver is pulled from a furnace where its temperature was 900C and placed on a very large block of ice at 0.0C. Assuming that all the heat given up with the silver is used to melt 1.3 kg ice and not all the ice melts, what is the m..
q1. a 62.6-kg chandelier is suspended 1.5 m below a ceiling by three wires each of which has the same tension and the
Light from a helium-neon laser (lamda=633nm) is incident on a single slit. What is the largest slit width
the back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. the walls of the
A bob of mass m = 0.250 kilogram is suspended from a fixed point with a mass less string of length L = 22.0 centimeter. What tangential speed v must the bob have therefore that it moves in a horizontal circle with the string making an angle 21.0 deg..
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.0 m/s. find the force he exerts on the ball to give it this upward speed
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
A guitar player tunes the fundamental frequency of a guitar string to 300 Hz. (a) What will be the fundamentalfrequency if she then increases the tension in the string by 20%?
A package of mass 25.97 kilogram is released from rest at a warehouse loading dock and slides down a 2.02 meter high frictionless chute to awaiting truck. Find what is their common speed after the collision
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. calcultae the velocity of the target ball after the collision
You pull a 14 kilogram box across the floor with a strap that is at an angle of 34 degree above the horizontal. Compute the normal force and the tension in strap
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