Find out the moment of inertia of the pulley
A 2.50 kg mass is attached to a light cord that is wrapped around a pulley of radius 3.45 cm, which turns with negligible friction. The mass falls at a constant acceleration of 3.85 m/s2. Find the moment of inertia of the pulley.
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Twenty dietary iron tablets with a total mass of 22.131 g were ground and mixed thoroughly. Then 2.998 g of the powder was dissolved in concentrated HNO3 and heated to convert all the iron to Fe3+.
A boy of mass 46.2 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.2 m/s. The boy falls off the skateboard, and his center of mass moves forward at a speed of 10.9 m/s. Find the final velocity of the skateboard.
Calculate the escape speed from the Earth for a 4800 kg spacecraft and determine the kinetic energy it must have at the Earth's surface to move infinitely far away from the Earth. What is its orbital speed?
A new cellular phone billing plan cost $15 per month plus $1 for each minute of use. If the number of minutes you use the phone in a month is a geometric random variable with expected value 1/p, what is the expected monthly cost of the phone?
The hydrogen gas formed in a chemical reaction is collected over water at 30 degrees celsius and a total pressure of 732 mmHg.
A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 294 lb. and a variance of 2401. (Give your answers correct to four decimal places.)
Christian Huygens (1629-1695), the greatest clockmaker in history, suggested that an international unit of length could be defined as the length of a simple pendulum having a period of exactly 1 s.
Fluorides of xenon can be formed by direct reaction of the elements at high pressure adn temperature. Under conditions that produce only the tetra- and hexafluorides, 1.85 x 10 -4 mol of xenon reacted with 5.00 x 10 -4 mol of fluorine, and 9.00 x
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