Which of the following is an element?

A. Water

B. Carbon Dioxide

C. Oxygen

D. Ammonia

You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8 * (10^7) m and its rotation period to be 22.3 hours. You have previously determined that the planet orbits 2.

A force of 20 N acts acts on an object of 4.0 kg mass that is initially at rest. What is the resulting acceleration of the object? How far does the object travel in 6.0 seconds?

Which of the following are true for E = mc2? a. developed by John Dalton b. implies that a small change in mass produces a great deal of energy c. mainly used for nuclear reactions d. shows the relationship between meters and energy

if a laboratory balance accurately measures mass on the earth, can it accurately measure it on the moon?

How can the same object be moving to one person, yet stationary to another person?

What do compressions look like in a sound wave?

45 g of vinegar and 60 g of baking soda were used in a chemical reaction. What is the total mass of the products?

The maximum oxygen uptake is known as the

Moving a distal part of arms or legs to follow a circular path is:

Whats the difference between population density and population size?