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A marble (radius 0.8 cm and mass6.0 g) rolls without slipping down a rampof vertical height 28 cm. What is the speed of the marble when it reaches the bottom of the ramp?
m/s
An object is lifted vertically 2m and held there. If the object weighs 30N, how much work was done in lifting it. Describe it briefly.
A car of mass M = 1100 kg traveling at 45 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
a 190 g copper bowl contains 180 g of water both at 23.0degc. a very hot 450 g copper cylinder is dropped into the
A current of 1.00mA passes through a copper wire for 60.0s. How many coulombs of charge pass any point in the wire during this time period
You are holding a conducting loop of copper and looking at its circle. Behind it is a long current-carrying wire carrying the current from left to right. what is the direction of current flow if any
If the string is wrapped to the pulley and a downward Force is applied to the string
0.97 L of 16C water is placed in a refrigerator. What is the refrigerator's coefficient of performance
two steel wires of the same length one with radius r and the other with radius 2r are connected together end to end and
A converging lens (f = 13.0 cm) is held 6.20 cm in front of a newspaper, the print size of which has a height of 2.20mm. Find (a) image distance (in cm) and (b) height (in mm) of the magnified print.
10-nC point charge is located at the center of a thin spherical shell of radius 8.0 cm carrying -20 nC distributed uniformly over its surface. What is the magnitude of the electric field 2.0 cm from the point charge
a certain vibrating string on a piano has a length of 74cm and forms a standing wave having two antinodes. a which
there are two particles in the xy-plane particle one is located at 00 and particle 2 at 64. use your knowledge of
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