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1. A container with two moveable pistons is filled with incompressible oil with a specific gravity of 0.8. The larger piston has an area of 10,000 mm2 and on it is a car with weight of 10,000 N and a specific gravity of 2.0. How much force must be applied to the smaller piston(which has an area of 10 mm2) to keep the car at a constant height?
2.If the car is allowed to sink by 1 mm (and thus push the large piston down by 1 mm), how far does the small piston rise?
A very long solenoid of circular cross section with radius R = 5.30 cm has n = 69.0 turns/cm. An electron is sitting just outside the solenoid, at a distance r = 5.80 cm from the solenoid axis. What is the magnitude of the force on the electron as..
two point charges of 20.0 oc and - 8.00 oc are separated by a distance of 20.0 cm. what is the intensity of electric
When one person shouts at a football game, the sound intensity level at the center of the field is 61.1 dB. determine how many people are at the game
he beaker has a mass 15 grams when its empty the beaker plus the liquid has a mass of 38 grams. the liquid has a volume
A 9960 lb rocket is launched straight up, starting at rest. The thrust force pushing the rocket upward is 20000 lb. Air resistance exerts a force of 4000 lb (assumed constant). Think the point at which the rocket is 5.0 miles up.
moving a charge from point a where the potential is 380v to point b where the potential is 190 v takes 4.1times10-4 j
Evaluate the temperature of the universe when it has cooled enough that photons no longer disassociate the deuteron
a bus contains a 1740 kg wheel (a disk that has a .56 m radius) and has a total mass of 9600 kg. How high can the bus climb with this stored energy and still have a speed of 3.10 m/s at the top of the hill
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. How close will the helium atom come to the gold nucleus
A converging lens has a focal length of f = 43 cm for blue light and f = 53 cm for red light. An object is placed 140 cm in front of the lens and is illuminated with white light. How far apart are the two images
a 1270-kg car travels 1.19 km up an incline at constant velocity. the incline has an angle of 2.19deg with respect to
A string of a violin is 32 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 7.2 x 10-4 kg/m. What are the wave speed and the tension in the string
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