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The Moon rises and sets, for example, a new moon that is on an observer's latitude at 12 noon rises at 6 A.M. and sets at 6 P.M. Suppose an astronaut on the Moon saw the Earth on his longitude at 12 noon. At what time would the Earth set?
A small motor is mounted on the axis of a space probe with its rotor (the rotating part of the motor) parallel to the axis of the probe. Through how many revolutions has the rotor turned
a runner of mass m=37kg and running 2.8 m/s runs and jumps on the rim of a playground merry go round which has a moment of inertia of 383 kg.m2 and a radius of 2 meters. what is its final angular velocity
A satellite is in a 95.0min period circular orbit 400km above Earth's surface. Find its centripetal acceleration
A charge Q = -820 nC is uniformly distributed on a ring of 2.4 m radius. What is the minimum work that an external force must do to transport an electron from B to A?
A speed ramp at an airport is basically a large conveyor belt on which you can stand and be moved along. The belt of one speed ramp moves at a constant speed such that a person who stands still on it leaves the ramp 66 s after getting on.
Calculate charges, current, potential difference.
a sinusoidal voltage e200sin314t is applied to a resistor of 10 ohm resistance. calculatei r.m.s of the voltage.ii rms
a 50.0 cm open-open tube 6.0 cm in diameter has a measured f1= 304 Hz. calculate the end correction constant from these data.
an electric field of 12.4 nc directed due north is superposed on an existing electric field of 16.5 nc directed due
A solid uniform brick is placed on a sheet of wood. When one end of the sheet is raised , What is the width w of the brick
two point charges are on the y-axis. a 2.5 microc charge is located at y 1.50 cm and a -2.48 microc charge is located
The science fiction writer Robert Heinlein once said, "If you can get into orbit, then you're halfway to anywhere." Justify this statement by comparing the minimum energy needed to place satellite into low Earth orbit (h=400km) to that needed to set ..
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