A bike is moving north when the rider applies the brakes. In which direction does the frictional force act between the ground and the bike's wheels?

A.

north

B.

south

C.

upward

D.

downward

Which one of the following terms describes a type of muscle contraction in which the muscle length remains the same? a. isotonic b. isometric c. isokinetic d. isotropic

How many carbon atoms are found in a molecule of 2-methyl-3-nonene? 8 9 10 11

When sedimentary rock sits for years and years will it build up more layers and. Make fossils

Which of these is an acid? a ammonia b vinegar c water

Which formulas represent one ionic compound and one molecular compound?

True or False: DNA is our genetic make-up. It is why we have a certain eye color, and hair color, etc.

Which hybrid orbitals would be formed if one s orbital and three p orbitals combined?

The way light bounces off a minerals surface is describe by the minerals

Physical properties can be used to describe matter. Some properties are dependent on the amount of matter present. All BUT ONE of these physical properties changes with the amount of matter. That is A) density. B) mass. C) volume. D) weight.

Which term best describes the substances that cause oil and water molecules in salad Dressing to interact and mix? surfactants miscible liquids immiscible liquids compressed molecules