Negative charges repel positive charges.

a. true or

b. false

Why is it good practice for scientists to repeat trails

Amusement Park Ride At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.

Which has a greater momentum: a heavy truck at rest or a moving skateboard?

Water Cycle 1. True or False: The earth always has the same amount of water because it is constantly forming more water AND losing water at similar rates.

The atomic number is always equal to the atomic mass. True or False?

Which reaction obeys the law of conservation of mass?

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.