Two bikers, Jose and Luis, start at the same point at the same time and travel in opposite directions. Jose's average speed is 12 miles per hour more than that of Luis, and after 3 hours the bikers are 90 miles apart. Find the average speed of
each biker

10 you would take 50/ .2

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an equation by definition has to have two or more variables (x and 2 in this case)

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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

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