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A boy has a 100-g stone. He places it in a leather pouch attachedto the end of a 1-meter leather thong. He whirls the whole systemover his head and then releases the stone from the pouch. If thetension on the string was 250 N, what was the velocity of the stoneas it left the pouch?
compute your apparent weight at the top of a Ferris wheel, given that the radius of the wheel is 7.1 , it completes one revolution every 30 , and your mass is 51 .
A transformer has input voltage and current of 12 V and 6 A, and an output current of 0.8 A. how many turns are on the primary side
The weight of passengers on a roller coaster increases by 57 as the car goes through a dip with a 39 radius of curvature. What is the car's speed at the bottom of the dip
What is the shortest height a plane mirror must be so that a person who is 1.6 meters tall is able to see his or her whole body? plan a ray diagram to support your answer.
A small hole is cut in the bottom of a water storage tank. The initial depth of the water is 12.00 m. what is the flow rate of the water leaving the tank
A rock weighing 10kg is carried horizontally across a 10m room. Calculate What power is expended if you lift the rock to 120cm in time 10s
a wooden speaker with a mass of 12.57 kg is attached to a light spring with a spring constant of 145 nm. the system is
In a marathon race Chad is out in front, running due north at a speed of 3.88 m/s. John is 97 m behind him, How long does it take for John to pass Chad
A copper rod of length 0.78 m is lying on a frictionless table (see the drawing). What must be the direction of the current in the copper rod
light incident on a pair of slits produces an interference pattern on a screen 2.5 m from the slits. if the slit
The temperature in Browning, Montana, was 44.0 °F on January 23, 1916. The next day the temperature plummeted to - 56.0 °F. What was the temperature change in Celsius degrees?
a compressed air cylinder is known to fail if the pressure exceeds 110 atm. it was filled to 25 atm at 20 degrees
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