Why is gravitational potential energy negative?

A high-speed flywheel in a motor is spinning at 450 rpm (revolutions per minute) when a power failure suddenly occurs. The flywheel has mass 45.0 kg and diameter 74.0 cm. The power is off for 25.

James m = 85.0 kg and ramon m = 59.0 kg are 20.0 m apart on a frozen pond. midway between them is a mug of their favorite beverage. they pull on the ends of a light rope stretched between them. ramon pulls on the rope to give himself a speed of 1.

Kinetic energy of an object changes when the speed of the object doubles why

If the labor force of 155 million people is growing by 1.2 percent per year, how many new jobs have to be created each month to keep unemployment from increasing?

In 2009, Melissa developed a hydrogen powered engine for a car while working in her garage in her spare time. Melissa installed the engine in a small car that she has been driving around town. In 2012, engineers working for Ford Motor Co.

What are the equations for acceleration and net force?

Which is a diatomic molecule? A. Ar B. CO C. CO2 D. NaCl

A sample of N-type silicon is at the room temperature. When an electric field with a strength of 1000V / cm is applied to the sample, the hole velocity is measured and found to be 2 * 105 cm/sec. a.

Which of the following is a vector quantity? A. 83 ounces of liquid B. 55 km/hr in a truck C. 15 seconds of travel D. 10 m/s down

Which of the following best describes the ultraviolet catastrophe of blackbody radiation? A. As energy is added to an object acting as a blackbody radiator, its emissions move to the ultraviolet part of the electromagnetic spectrum. B.