Vector A has a magnitude of 27 units and points in the positive y-direction. When vector B is added to A, the resultant vector A + B points in the negative y-direction with a magnitude of 15 units. Find the magnitude and direction of B. magnitude

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?