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A stone has a mass of 3.15 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.941. When the tire surface is rotating at 17.3 m/s, the stone flies out of the tread. The magnitude FN of the normal force that each side of the tread channel exerts on the stone is 1.50 N. Assume that only static friction supplies the centripetal force, and determine the radius r of the tire (in terms of m)
if turns ratio of primary to secondary coil of transformer is 1:3 and voltage on primary coil is 10 volts. what is voltage of seconday coil
A block of mass 12-kg slides from rest down a frictionless 34° incline and is stopped by a strong spring with k = 1.0x 10^4 N/m. The block slides 3 m from the point of release to the point where it comes to rest against the spring.
A hot-air balloonist, rising vertically with a constant velocity of magnitude v= 5.00 m/s, releases a sandbag at an instant when the balloon is a height h= 40.0 m above the ground. With what magnitude of velocity does it strike
At a certain point in a horizontal pipeline, the water's speed is 4.00{\rm m/s}, Find the gauge pressure at a second point in the line
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10.00 radius of curvature. What is the car's speed at the bottom of dip? What is the car's speed at the bottom of the dip?
How far does the object compress the spring if same experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected.
A toy top has a string wrapped around its body. The string has a length of 64cm and is wrapped around the top at a place where its radius is 2.0cm. What is the final angular velocity in rpm of the top when the string is completely unwound
A 54-kg skater initially at rest throws a 3.0-kg medicine ball horizontally to the left. Determine the acceleration of the ball during the throw
Each cable has a length of l = 2.90 m. Illustrate what is the tension T in each of the cables? Use 9.80 m/s2 for the magnitude of theacceleration due to gravity.
A new plant oil is discovered that is easy to recover from the plant and it might be a useful fuel. A question is the energy density of the fuel. Calculate the energy-density of this "new fuel"
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops, which have a typical radius of 10 µm. How much mass does the water in the cloud have
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third filter
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