Two small identical conducting spheres are placed with their centers 0.63 m apart. one is given a charge of 12 x 10^−9 c, the other a charge of −23 x 10^−9 c. (a) find the electrostatic force exerted on one sphere by the other. magnitude n direction (b) the spheres are connected by a conducting wire. find the electrostatic force between the two after equilibrium is reached, where both spheres have the same charge. magnitude n direction

Awave travels at a speed of 5.2 m/s. if the distance between crests is 0.40 m, what is the frequency of the wave? use f=v/wavelength a. 13 hz b. 2.1 hz c. 0.077 hz d. 5.6 hz

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

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