Why are red stars cooler than blue stars?

Which elements make up the empty spce in the universe?

How were the coastal plains formed

Technician A says that battery load test loads the battery to one-half of its CCA rating. Technician B says that a good battery should be able to maintain higher than 9.6 volts for a 25 second test period.

A 2.17 g sample of acetylsalicylic acid required 23.88 mL of 0.5043 M NaOH for complete reaction. Addition of 13.46 mL of 0.4472 M HCl to the flask containing the aspirin and the sodium hydroxide produced a mixture with pH

Which statements accurately describes the waste generated by nuclear reactions? check all that apply. A. It is hazardous for hundreds to thousands of years B. some waste can be recycled and used again C. it is hazardous to living organisms forever D.

According to this lesson, how many major ice ages has the earth undergone? A. 2 B. 3 C. 4 D. 5

In 2016, the city of Rio de Janeiro had a population density of 5377 people/km2. What was the population density of Rio in people per square meter?

Which kingdom consists only of complex multicellular, eukaryotic organisms which must consume or ingest other organisms for nutrition?

A boy throws a ball straight up in the air with an initial velocity of V+3 mls. The ball reaches a maximum height and starts towards earth. The boy catches the ball at the same height that it left his hand. How long is the ball in the air? 6. a.

Which of the following is a complex machine? 1) piano 2) bottle opener 3) shoehorn 4) doorknob