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A belt wraps around a pulley of radius 7.3 cm that drives the compressor of an automobile air conditioner. The tension in the belt on one side of the pulley is 45 N and on the other side of the pulley it is 27 N. How much work is done by the belt on the compressor during one revolution of the pulley?
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it, During the very brief time of the pulse, what is the intensity of the light wave
A fire hose held near the ground shoots water at a speed of 6.2 m/s.At what angle(s) should the nozzle point in order that the water would land 2.5 m away.
Two slits separated by 0.0530 mm and located 1.60 m from a viewing screen are illuminated with monochromatic light. Find the separation between adjacent bright fringes
The voltage across a resistor is equal to the product of the current through the resistor and the resistance of the resistor, What is the potential difference of the battery
A charged sphere of radius 10 cm has a total charge of 5 C. Calculate the potential at the surface of the sphere
An Olympic long jumper leaves the ground at an angle of 19.8 ° and travels through the air for a horizontal distance of 8.17 m before landing. What is the takeoff speed of the jumper
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box, Find the acceleration of the box
Mountaineers often use a rope to lower themselves down the face of a cliff (this is called rappelling). They do this with their body nearly horizontal, What tension does his rope need to support
A thin ring of radius R carries a charge 3Qdistributed uniformly over three-fourths of its circumference, and -Q over the rest
Blocks of mass 20, 80, and 240 kg are lined up from left to right in that order on a frictionless surface so each block is touching the next one. What is the magnitude of the force that the left block exerts on the middle one
Studies of the relationship of the sun to our Galaxy- The Milky Way - Have revealed that the sun is located near the outer edge of the galatic disc, what is the period of the sun's galactic motion
A 30-g silver teaspoon at room temperature 200C is placed into 200 g of hot tea 1000C. No heat escapes the spoon-tea system. You assume that the specic heat of tea is the same as that of water.
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