Adding bulbs to a parallel circuit causes all of the bulbs to shine less brightly.

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

How do we measure or think of speed in the united states?