Wave a has an amplitude of 2, and wave b has an amplitude of 2. what will happen when the crest of wave a meets the trough of wave b? they will interfere to create a crest with an amplitude of 0. they will interfere to create a crest with an amplitude of 2. they will interfere to create a crest with an amplitude of 4. they will bounce off each another.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.