Positive ions differ from neutral atoms in that

A)

positive ions have lost protons.

B)

positive ions have gained protons.

C)

positive ions have lost electrons.

Eliminate

D)

positive ions have gained electrons.

g Problem 4. A 2000 kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain directly down into the freight car. If the speed of the loaded freight car must not go below 3.

Which of the following statement about the use of prescribed fires in the everglades is true

A solid cylinder of mass m and radius R rolls down a ramp, starting from rest at a height h above a nearby horizontal surface.

An object is dropped on Earth from a height of 15 m. How long did it take for the object to reach the ground? A) 1.2 seconds B) 1.5 seconds C) 1.8 seconds D) 3.0 seconds

True or false according to scientists you do work only when you exert energy

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

If you had a positive 8 score on the sit-an-reach test you

65 million years ago there was a mass extinction that is best known for killing the dinosaurs. There was also a large deposit of dust that contained substances only found in asteroids.