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A hydraulic jack is made by a small piston 1.3 cm in diameter that is utilized to move a large piston 6.1 cm in diameter. If a man can exert a force of 360 N on the small piston, how heavy a load can he lift by the jack?
A certain nuclear reactor is capable of producing 1.00 x 109 W of power. During its operation, mass is converted to energy. How much mass is converted in one hour
A cat drops from a shelf 3.7ft above the floor and lands on all four feet. His legs bring him to a stop in a distance of 12 cm . Calculate his speed when he first touches the floor (ignore air resistance). Calculate how long it takes him to stop.
an 8 ohm speaker is connected across the output terminals of a power amplifier that delivers 72 w. what is he current
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 18.0° below the horizontal. Find the length of time the car is in the air
A doubly charged helium atom whose mass is 6.6 10-27 kg is accelerated by a voltage of 2500 V. What is its period of revolution
bernie b is walking directly toward the center of a vertical mirror m. how close to the mirror will he be when sarah s
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, Find the acceleration of the proton
a 2.9-kg cart is rolling along a frictionless horizontal track towards a 1.6-kg cart that is held initially at rest.
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
You, Archimedes, suspect that the king?s crown is not solid gold but is instead gold-plated lead. What percentage (by weight) of this crown is made of gold
You make a capacitor by cutting the 12.5 cm diameter bottoms out of two aluminum pie plates, separating them by 3.50 mm , and connecting them across a 6.00-V battery. what will be the potential difference between them
a 500 g steel rod 30 cm in length is pivoted about its center and rotated at 300 rpm.a what is the angular momentum?b
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