Apoint charge q1 = -4.00 nc is at the point x = 0.60 m, y = 0.80 m , and a second point charge q2 = +6.00 nc is at the point x = 0.60 m , y = 0. calculate the magnitude of the net electric field at the origin due to these two point charges? calculate the direction of the net electric field at the origin due to these two point charges?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?