(Score for Question 1: of 4 points) 1. Emily filled an empty horse trough with water. The water level in centimeters, is proportional to time elapsed,
in minutes, since she began filling the trough. The graph shows this relationship.
Water Trough Level
y
35
y = 3.5x
30
25
(8, 28)
(6, 21)
Water level (cm)
20
15
10
o
5
(1, 3.5)
(0,0)
0 1 2 3 4 5 6 7 8 9 10
Time (min)
(a) What rate does the point (828) represent? Explain.
(b) What is the unit rate for the situation in terms of centimeters/minute? Explain.
(c) Explain how the points (828) and (621) show that the water level varies directly with the time
elapsed.

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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

part a: 1.08

part b: 27.59