An object is lifted to a certain height and then dropped. During the drop, which of the following is increased?

a) gravitational potential energy

b) kinetic energy

c) total mechanical energy

d) B and C

Carl has a 5-inch refracting telescope and Jim has a 3-inch reflecting telescope. Whose telescope has a higher light-gathering power?

Let's see how much you know about space, so here's a good astronomer question for you (there's 2 questions included in this): 1.) What year does NASA plan on sending people to Mars? (A) 2020 (B) 2021 (C) 2022 (D) 2023 2.

A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force?

A car of mass 1000 kg travels around a level curve of radius 40 m. If the maximum frictional force that can be exerted upon the car by the road (determined by the coefficient of friction between the tires and the road) is 7000 N how fast can the car

How much heat has to be added to 508 g of copper at 22.3°C to raise the temperature of the copper to 49.8°C? (The specific heat of copper is 0.377 J/g·°C.)

Two planes leave wichita at noon. One planes flies east 30m/h faster than the other plane, flying east at what time will they be 1200 mi apart?

Red, blue, and green are called a __ __ __ __ __ __ __ primary colors because when they are added together, they form all of the colors of the spectrum.

What is it called after data is collected they are often arranged in a what?

If you have a pci express version 2 video card, how many pins will the power connector have if the card requires extra power?

As ocean waves get closer to the shore they slow down. This slowing causes them to bend and come in close to parallel with the shore. This is because shallow water and deep water can be thought of as two different media.