A car moves at a rate of 100 meters per second heading north. if it changes only its direction what must change

A. only its speed

B. only its velocity

C. both

Which of the following is the general definition of a gas? Matter with a fixed volume and a fixed shape. Matter with no fixed volume and no fixed shape. Matter with a fixed volume but no fixed shape. Matter with a fixed shape but no fixed volume.

What population would be affected the greatest by rerouting a river for crop irrigation? A) A population of fish that lives downstream B) Farmers that live upstream C) Migratory herds that drink from the waters

There are six continents on Earth. True False

Which is the best example of the law of conservation of energy? a basketball stops bouncing because its energy disappears. a rolling skateboard slows down because some of its kinetic energy changes to heat.

The mass of a nitrogen atom is 14 u. What is the mass, in grams, of 2 mol of N?

State the relationship between the number of electrons in a carbon-nitrogen bond and carbon-nitrogen bond energy

What are the characteristics of bones?

If 294 grams of FeS2 is allowed ti react with 176 grams of O2 according to the following equation how many grams of Fe2O3 are produced? FeS2 + O2 = Fe2O3 + SO2

Convert 3.57 moles of aluminum to grams

An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?