On a cloudy day, Joan needed to know the height of a window in a building. Joan positioned a mirror on the ground between herself and the building so that when he looked in the mirror, she saw the window. If the mirror was 19.93 cm from her feet and 31.33 m from the base of the building and Joan's eye was 1.91 m above the ground, how high up on the building was the window located? Round to the nearest unit.

50

step-by-step explanation:

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

i think the answer is true

step-by-step explanation: