A pool can be filled by a pipe in 3 hours. it takes 3 times as long for another pipe to empty the pool. how long will it take to fill the pool if both pipes are open?

The mass lost during solar thermonuclear fusion is converted to

What device stores charge on two parallel metal sheets? A. A resistor B. A battery C. A capacitor D. A wire

Acids weaken some substances. Bacteria in your mouth acts on sugar and produces acids. What would be the end result of this chemical reaction between your teeth and the acid produced?

The strong nuclear force is about the same as the electric force 75 times smaller than electric force more than 100 times greater than the electric force

1. Which of the following would not be found on the electromagnetic spectrum? A. The wavelengths of electromagnetic radiation B. The frequency of electromagnetic radiation C. The colors of visible light D. The pitch of a sound wave

Which nitrogen base sequence is the partner of C-A-T-C-G-A? O C-A-T-C-G-A O G-T-A-G-C-T OT-G-C-T-A-G O G-C-A-T-G-T TI

What is the kind of energy that comes from movement?

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J

Which one of the following crystal structures has the fewest slip directions and therefore the metals with this structure are generally more difficult to deform at room temperature? a. BCC b. FCC c. HCP d. BCT

To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory C) Skeletal D) Nervous