Una piedra de masa 4 kg es lanzada hacia arriba con una velocidad de 130 m/s. Si por la acción del agua pierde el 14 % de su energía mecánica.

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?