Easy 50 points for one question

I believe its C

Step-by-step explanation:

B

Step-by-step explanation:

First, let's figure out what our two numbers are.

-7/2 = -3 1/2.

So if we have -2 + -3 1/2, that means we must first travel -2 units, which will be the first blue arrow, then add -3 1/2 more units. This would give us an answer of -5 1/2 units.

That means B is the answer, because it's the only one that ends up at -5 1/2.

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v