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When the lights of a car are switched on, an ammeter in series with them reads 7.52 A and a voltmeter connected across them reads 12.0 V (see the figure). When the electric starting motor is turned on, the ammeter reading drops to 5.99 A and the lights dim somewhat. If the internal resistance of the battery is 0.0532 ? and that of the ammeter is negligible, what are
(a) the emf (in V) of the battery and
(b) the current through the starting motor (in A) when the lights are on?
The force stretching the D string on a certain guitar is 170 N. The string's linear mass density is 0.006 kg/m, What is the speed of the waves on the string
A 150-kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1680 N, Find the acceleration of the rocket
A particle has initial velocity 5 m/s due east and acceleration 2 m/s^2 due west. Find the distance traveled during 3rd second of the motion.
A gas increases in pressure from 2.0 atm to 6.0 atm at a constant volume of 1.0 m3 and then expands at constant pressure to a volume of 3.0 m3 before returning to its initial state. How much work is completed in one cycle.
A missile is shot straight up into the air. At the peak of its trajectory, it breaks up into three pieces of equal mass, What is the angle of the remaining piece
To clear the net, the ball must rise at least 0.294 m. If the ball just clears the net at the apex of its trajectory, explain how fast was the ball moving when it left the racquet?
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
A movie star catches a reporter shooting pictures of her at home. She claims the reporter was trespassing and to prove her point, How far away from the subject was the reporter standing
A quantity of an ideal gas is contained in a balloon. Initially the gas temperature is 27°C, What is the new temperature of the gas
Select True or False for the following statements about conductors in electrostatic equilibrium. The electric field inside the conducting material is always zero.
A telescope has an objective with a refractive power of 1.50 diopters and an eyepiece with a refractive power of 270 diopters
A rocket moves straight upward ,starting from rest with an acceleration of +29.4 m/s2. it runs out of fuel at the end of 10.00 seconds, find the maximum height the reaches
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