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An auto weights 650lb. and is placed 4.00 ft. from one end of a 10.0ft work bench. If the bench is uniform and weights 75.0lb, find what weight must each end of the bench support?
Particles approximately 3.0 X 10-2 cm in diameter are tobe scrubbed loose from machine parts in an aqueous ultrasoniccleaning bath. Above what frequency should the bath be operated to produce wavelengths of this size and smaller?
Sand falls from a hopper onto a moving conveyor belt at a mass rate of 0.68 kg/s. The belt moves at constant velocity 9.00 m/s. What is the force on the belt that is required to keep the velocity constant? Assume the sand does not slip as it lands on..
A 2.10 x 10^3 kg car starts from rest at the top of a 4.70 m long driveway that is inclined at 25° with the horizontal. If an average friction force of 4.0 x10^3 N impedes motion, find out the speed of the car at the bottom of the driveway.
The aurora is caused when electrons and protons, moving in earth's magnetic field of 5x10^-5 T, collide with molecules of the atmosphere and cause them to glow. What is the radius of the circular orbit for (a) an electron with speed 1.0×10^6 and (b) ..
three point charges lie along a straight line as shown in the figure below where q1 6.36 microc q2 1.46 microc and q3
For the house in Question 3, calculate the infiltration heat losses in Btu/h when ?T = 40°F. What percentage of the heat loss is because of infiltration
A 78 kg refrigerator has rubber feet. The coefficient of staticfriction between a floor and the feet has is 1.1, while itscoefficient of kinetic friction is .9. Whats the force needed tobegin moving the refrigerator across the floor and the minim..
An aluminum cylinder is suspended in an unknown fluid by a spring scale. Outside the fluid, the object weighs 20N. In the fluid it weighs 10N. If the cylinder has a volume of 10–4m3, what is the density of the fluid?
a certain 4.8-volt cellular telephone battery has a capacity of 600 mah. one mah equals 3.6 coulombs. when the batterys
A copper plate, with dimensions of 3 cm x 3 cm x 5cm length, width, and thickness respectively, determine the temperature rise in the plate after 10 seconds
1.A fight breaks out at club event in Hollywood. As a result, a chair hits a 4.0-m-long metal baron the stage. A microphone at the other end of the bar picks up two pulses of sound (over the roar of the crowd, of course). One of the pulses trav..
Two long, coaxial cylindrical shell conductors carry equal and opposite charges. The inner shell has radius "a" and charge +q, and the outer shell had radius "b" and charge -q. Find the potential difference between the shells
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