Two point charges, with charges q1 and q2, are each moving with speed v toward the origin. at the instant shown q1 is at position (0, d. and q2 is at ( d, 0). (note that the signs of the charges are not given because they are not needed to determine the magnitude of the forces between the charges.) part a what is the magnitude of the electric force between the two charges? express f in terms of q1, q2, d, and ϵ0.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?

Astronomers studying the planet of rhombus have detected sedimentary rock on its surface. one astronomer wonders if material in this sedimentary rock used to be in igneous rock deep in rhombus’s interior. can igneous rock become sedimentary rock? explain your answer.