A fuel oil tank is an upright cylinder, buried so that its circular top is 12 feet beneath ground level. The tank has a radius of 4 feet and is 12 feet high, although the current oil level is only 8 feet deep. Calculate the work required to pump all of the oil to the surface. Oil weighs 50 lb/ft3.

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

What structural formula represents 4 electrons shared between two atoms?