Which formula can be used to sum the first n terms of a geometric sequence?
o
1-7
Sn = 21
(1-ph
(1-x
Sn=a,
1-1
Saat
Q
1-T
21
Sn =
1-1

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

yes

step-by-step explanation:

ratio is 2 : 9

the answer is three

13.5 : 3

c

-by-step explanation:

it would be c