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A thin pole extends straight up from the bottom of a clear pond 2 m deep. The pole extends 1.2 m above the surface of the water. The sun's light creates a shadow of the pole on the surface of the water. This shadow is 0.08 m long. What is the length of the pole's shadow on the bottom of the pond?
A typical color television draws about 2.9 A when connected to a 150 V source. What is the efiective resistance of the T.V. set
Two insulated wires, each 2.94 m long, are taped together to form a two-wire unit that is 2.94 m long. One wire carries a current of 8.36 A, What is the current I
A billiard ball moving at 5 m/s strikes a stationary ball of the same mass. After the collision, find the struck ball's velocity (magnitude and direction) after the collision
q1. a 59-g ice cube at 0degc is heated until 52 g has become water at 100degc and 7.0 g has become steam at 100degc.
You are lowering two boxes, one on top of the other, down the ramp by pulling on a rope parallel to the surface of the ramp. What is the magnitude of the friction force on the upper box
A girl of mass 42 kilogram throws a ball of mass 0.5 kilogram against a wall. Obtain the average force exerted on wall by the ball
two spaceships pass each other travelling in opposite directions. the speed of ship b as measured by a passenger in
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
In an electric motor, a coil with170turns of radius2.9cm can rotate between the poles of a magnet. what is the maximum torque that the motor can deliver
The propulsion system on a 1500kg rocket car fires for 15 seconds and the propulsion force is equal to F= x(80-x). What is the average speed for the entire two stage event
In a football game, a receiver is standing still, having justcaught a pass. Before he can move, a tackler, running at a velocityof +3.77 m/s, grabs him. The tackler holds onto the receiver, andthe two move off together with a velocity of +1.64 m/s. T..
A potential di?erence of 10 V is found to produce a current of 0.44 A in a wire of length 3.1 m with a uniform radius of 0.44 cm What is the resistivity of the wire
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