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Q. A test tube filled with liquid of uniform density, is spun in a centrifuge with angular frequency. The test tube lies perpendicular to the axis of rotation of the centrifuge. The pressure in the fluid at the distance from the axis of rotation is. You may ignore the variation in pressure with depth; suppose that it is much smaller than the variation in pressure with radius.
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and magnitude of one charge is cut in half, what is the new force between them.
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
What is a density of the block
The gravitational force between two masses M and m separated by a distance r is 40 N. What is the new force when this distance is halved?
Define the carrier power, total power and sideband power in the AM signal.
A block of mass m is suspended from the string a height h above the ground. The string is wrapped around a disk shaped pulley with mass m and radius R. Find out the tension T in the string. (The answer should be in terms of variables). Rotational ..
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
Find out line linking the two point charges
What is the potential difference in volts between the plates.
A roller coaster is towed up an incline at a steady speed of 0.51m/s by a chain parallel to the surface of the incline. The slope is 2.85 % that means that the elevation increases by 2.85 m for every 100m of horizontal distance.
A 5 kg fish is swimming at a speed of 1ms swallows a 1.00 kg fish swimming toward it at 4 m/s. The speed of the larger fish after lunch is what.
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