you can produce a sound by plucking a string or by blowing into a pipe. how are these two sounds different

What are the "three R's" that lessen human impact on the land?

During a solar eclipse the Moon is positioned directly between Earth and the Sun. Find the magnitude of the net gravitational force acting on the Moon then, due to both Earth and the Sun. The masses of the Sun, Earth, and the Moon are 1.

When you are running around a track, what kind of energy are you using?

Heat is a measure of the average kinetic energy of all the particles in an object

To display the New Document dialog box, click the Office Button and then click New. a. True b. False

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. Which statement is true for this reaction?

Why does an object in motion stay in motion unless acted on by an unbalanced force? A) because forces are what stop and start motion B) because balanced forces cannot exist in nature C) because motion is the inherent state of all matter D) because

A car travels 100 meters in 4.0 seconds. find its average velocity.

What force must he used to do 224 joules of work on an object over a distance of 32 meters

If my science fair project is about if girls can see through illusions better than boys, what would my background research be about?