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A particle of mass 7 × 10-5kg and charge1 µC moves downward from point A to pointB a distance of 6 m in the earth's gravitational field. The kinetic energy of the particle decreases by 4.7 mJ during this movement. What is the potential difference VB - VA?The acceleration of gravity is 9.8 m/s2.Answer in units of kV.
If the microphone in problem 3 has an area of 0.750 cm2. What is the power intercepted by the microphone
A 100 gram bullet travelling at 350 m/s strikes and sticks into a stationary 5.00 kg block of wood. The combined bullet+ block initially slides on a horizontal frictionless surface until they encounter a 30.0 degree inclined plane with a coefficient ..
a 11micro f capacitor is joined in series with a 35micro f capacitor and a 12 volts battery.a what is the potential
at its hot reservoir at 135 degrees Celsius and has a thermal efficiency of 22.0%. How much heat does the engine waste per cycle
An alpha particle is fixed at the origin of coordinates. A neutral sodium atom is fixed at the position e-6 m. ( Be sure to show all of your work and reasoning in your solutions to this problem.)
The diagram shows a block of mass m resting on a smooth inclined surface of a 30 degree wedge of mass M, which in turn rests on a smooth horizontal surface. The system is released from rest. Show that the acceleration of the wedge is √3mg/(m+4M).
Estimate the pressure exerted on a floor by (a) one pointed chair leg (60 kg on all four legs) of area=0.020 cm^2, and (b) a 1500-kg elephant standing on one foot (area=800 cm^2).
What is the amplitude of the subsequent oscillations. A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 519 N on the glove, so that the glove is displaced 10.0 cm, how much work is done by the ball.
A transformer with a turns ratio (secondary:primary) of 1:80 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit. What is the voltage supplied to the recharger?
A flat copper sheet has a hole with area 0.265 m^2 at room temperature (25 degree C). If it's heated to 510 degree C, what's the hole's new area
A gas expands from 0.20m3 to 0.30m3 at a constant pressure of 1.01x105 Pa. During this process 12,100 J of heat flow into the gas. What is the change in internal energy of the gas
What happens to the resistance of copper wire after dunking it in liquid nitrogen? and what happens to the resistance of a carbon resistor when you dunk it in liquid nitrogen.
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