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A sample of an unknown material appears to weigh 260 N in air and 200 N when immersed in alcohol of specific gravity 0.700.
(a) Evaluate what is the volume of the material?
m3
(b) Evaluate what is the density of the material?
kg/m3
Two resistors of resistance R are connected in parallel. The combination is connected in series to a resistor of resistance 2R. What is the resistance of this combination of resistors
You have a 200 kg cylinder of ice. It is bobbing vertically in the water. Ice's density is 900 kg per cubic meter. What is the density of 'Rebellium'
Consider a wet roadway banked as in Example 5.24, where thereis a coefficient of static friction of 0.30 and a coefficient ofkinetic friction of 0.25 between the tires and the roadway. What is the minimum speed the automobile can have before slidin..
On her way to school, a child discovered that her coin is missing and there is a hole in her pocket. She turned back and walked 24m east along the sidewalk. find her average velocity while searching for the coin
The earth's magnetic field, like any magnetic field, stores energy. The maximum strength of the earth's field is about 7.0 10-5 T. Find the maximum magnetic energy stored in the space
What is the minimum rate of rotation, in revolutions per minute, required for the spheres to contact the cylinder wall
A thin film of alcohol (n = 1.28) lies on a flat glass plate (n =1.54). What is the thickness of the film
200 mL of water at 20.0 C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 4.00. How much heat energy is exhausted into the room
A 13 kg dog is standing on the edge of astationary, frictionless turntable of rotational inertia 95kg·m2 and radius 2.05 m.The dog walks once around the turntable. What fraction of a fullcircle does the dog's motion make with respect to the ground?
An astronomical telescope uses an eyepiece of power +100.0 D. what are the power of the objective and the magnifcation of the telescope
A farsighted man uses eyeglasses with a refractive power of 1.90 diopters. Wearing the glasses 0.03 m from his eyes, What is the correct contact lens prescription, in diopters
A large storage tank, open to the atmosphere at the top and filled with water, Determine the speed at which the water leaves the hole
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