A ball is dropped from the top of a building.

When does the ball have the least potential energy?

1 half way through the fall

2

after it has hit the ground

3as it is released

4

just before it hits the ground

The diagram below shows three types of earthquake waves, labeled A, B, and C at different time intervals. Which of these statements is correct about the three waves? Select one: a. Wave A and Wave B travel through Earth's interior. b.

An atom's nucleus has 92 protons and its mass number is 235. how many neutrons are in the nucleus? what is the name of the atom

At 25°C, the following heats of reaction are known: 2ClF (g) + O2 (g) → Cl2O (g) + F2O (g) ΔH°rxn = 167.4 kJ/mol 2ClF3 (g) + 2O2 (g) → Cl2O (g) + 3F2O (g) ΔH°rxn = 341.4 kJ/mol 2F2 (g) + O2 (g) → 2F2O (g) ΔH°rxn = - 43.

A variable-ratio schedule will reward a subject after it displays a response enough times. on an irregular and non-conditional basis. on an irregular and conditional basis. after a certain length of time has passed.

Why does pressure change in this way? Select all that apply.

How does Earth's rotation axis cause seasons to change?

Which of the following can be considered evidence of a chemical change? (Click the 4 that apply) A. Evaportation B. Production of a new substance C. Production of Bubbles D. Melting E. Color change F. Dissolving G. Freezing H. Heat is released

The decomposition of hi has a rate constant of 1.80 * 10-3 m-1s-1. how much hi remains after 8.50 min if the initial concentration of hi is 4.78 m?

Explain negative and positive acceleration?

Compare and contrast plains and plateaus