Charge q1 = -7.5 nC is located at the coordinate system origin, while charge q2 = -1.92 nC is located at (a, 0), where a = 1.3 m. The point P has coordinates (a, b), where b = 0.95 m. A third charge q3 = 13.5 nC will be placed later.

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f