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The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.209 m and mass 4.70 kg, and two thin crossed rods of mass 9.95 kg each. You would like to replace the wheels with uniform disks that are 5.25 cm thick, made out of a material with a density of 8750 kilograms per cubic meter. If the new wheel is to have the same moment of inertia about its center as the old wheel about its center, what should the radius of the disk be?
An automobile engine slows down from 3000 rpm to 900 rpm in 4.5 s. find the total number of revolutions the engine makes in this time
a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°.
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.
When people exercise they shed heat to the environment by sweating and radiating. calculate the rise in body temperature after one hour
A tennis ball is thrown toward a vertical wall with a speed of 22.0 m/s at the angle of 40.0° above the horizontal. The horizontal distance between the wall and the point where the tennis ball is released is 28.0 m.
Three charged particles are placed at each of three corners of an equilateral triangle whose sides are of length 2.4 cm, Find the net force acting on particle 3 due to the presence of the other two particles
When they oppose one another, the box accelerates at 0.240 m/s2 in the direction of F2. (a) What is the magnitude of F1? (b) What is the magnitude of F2?
A sump pump is draining a flooded basement at the rate of 0.600 L/s, The water enters a hose with a 3.00 cm inside diameter and rises 2.50 m above the pump. What is its pressure at this point
Helium (He), a monatomic gas, fills a 0.012 m3 container. The pressure of the gas is 6.90x 10^5 Pa. How long would a 0.25 hp engine have to run (1 hp = 746 W) to produce an amount of energy equal to internal energy of this gas.
A sled of mass m is being pulled by a constant horizontal force of magnitude F. The coefficient of kinetic friction is Uk. find the power average created by force
Two steel juggling balls each carry a charge of 2.75 %u03BCC. What is the distance between the centers of the two balls?
question1a playground merry-go-round of radius r 1.80 m has a moment of inertia i 255 kg.m2 and is rotating at 8.0
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