A phylum may be subdivided into several classes.

a. True

b. False

If a train is slowing down it is accelerating true or false

How long does it take a cup of fresh water to freeze, boil and evaporate compared to fresh water

When light travels from air to water at an angle which of the following happens? a) The light slows down and it changes direction away from the perpendicular. b) The light slows down and it changes direction towards the perpendicular.

A man pulls on his dog's leash to keep him from running after a bicycle. Which term best describes this example? negative work positive work negative force positive force

Your weight equals your a. mass divided by the net force acting on you. b. mass times your speed. c. mass. d. mass times the acceleration due to gravity.

How do repeater stations improve the quality of a broadcast?

What is the total number of atoms in the following formula? CaBr2 04

The Amazon River is in Europe. True or False

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?