What causes an atom to be neutral?

a. equal number of protons and neutrons

b. equal distance between the nucleus and electrons

c. equal number of electrons and protons

d. equal distribution of electrons

An airplane flies with a constant speed of 680 miles per hour. How far can it travel in 165 minutes?

What is the speed of a 2000 Hz sound wave in vacuum?

During an investigation, a scientist heated 123.6 g of copper carbonate till it decomposed to form a black residue. The total mass of the black residue formed was 79.6 g.

if the separation between two masses is doubled, does the gravitational force between them increase or decrease? By what factor?

As frequency increases wave energy increases or decreases

Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called a. asteroids. b. meteors. c. meteorites. d. meteoroids.

What is the conversion from 1.2 mm to m

Which sentence contains italicized words that are used as an infinitive phrase? A. Kelly went to the grocery store. B. Tom went there for some flour. C. Mark wanted to go, but not today. D. Jane parked her car behind a truck.

The difference in electric potential between a thunder cloud and the ground is 1.53 108 V. Electrons move from the ground which is at a lower potential to the cloud which is at a higher potential.

A vitamin called folic acid is very important for neural tube development, which is the development of the baby's