A 7 kg bowling ball is rolling down the lane at a speed of 8 m/s. Calculate the kinetic energy of the bowling ball.

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray