In Exercises 39-46, find the unit vector that has the same direction as the unit vector v. 39. V= 6i
40. v = 5j
41. v=3i-4j
42. v= 8i-6j
43. v = 3i -2j
44. v = 4i-2j
45. v = i + j
46. v = i - j

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

20 feet per second

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-lavira : )