A tertiary source is the most desirable source for a researcher to use. True or false

Two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N? A. 562 B. 9.14 * 10^3 C. 1.01 * 10^6 D. 891

These three members of the Noble gas family all have one property in common because they are gases at room temperature. That is they A) are combustible. B) are compressible. C) are relatively dense. D) have no definite shape but a definite volume.

Small paragraph explaining how how potential and kinetic energy are related

How do you calculate velocity using meters and seconds

In a tropical rain forest, insects feed on leaves while frogs eat the insects. At ground level, fungi digest waste material to supply their nutritional needs. In this ecosystem, frogs are A) consumers. B) decomposers. C) parasites. D) producers.

A standing wave is established in an organ pipe that is closed at one end. What is located at the open and closed ends of the pipe?

When all parts of a circuit are composed of conducting materials, the circuit is said to be A. parallel. B. closed. C. open. D. shorted.

You travel an an average speed of 20 km/h in a straight line to get to your grandmothers house. It takes you 3 hours to get to her house. How far away is her house from where you started?

A boat with an anchor on board floats in a swimming pool that is somewhat wider than the boat. Does the pool water level move up, move down, or remain the same if the anchor is (a) dropped into the water or (b) thrown onto the surrounding ground

In July 2005, NASA's "Deep Impact" mission crashed a 372-kg probe directly onto the surface of the comet Tempel 1, hitting the surface at 37,000 km/h.