Particles q1 = -53.0 uC, q2 = +105 uc, and q3 = -88.0 uC are in a line. Particles q1 and q2 are

separated by 0.50 m and particles q2 and q3 are

separated by 0.95 m. What is the net force on

particle q1?

Remember: Negative forces (-F) will point Left

Positive forces (+F) will point Right

-53.0 μC

-88.0 μC

+105 μC

+ 92

91

93

0.50 m

0.95 m

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp