Net force is the total of all forces acting on an object. When a force is balanced and the object does not move, the net force is equal to what:

A. 0

B. 10

C. 100

D. The weight of the object.

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7. There is no gain in mechanical advantage in a single fixed pulley. En why the pulley is then used.

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A certain cable of an elevator is designed to exert a force of 4.5x 104 N. If the maximum acceleration that a loaded car can withstand is 3.5 m/s2 (the current fastest elevators in the world undergo an acceleration of less than 3.

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nitially, scientists described atoms as the smallest particles of matter. However, smaller particles within atoms were discovered. How did the scientific world respond to this new information?

The kinetic energy of a moving object is equal to the work required to bring it to its speed from rest, or the work the object can do while being brought to rest.

An engineer wants to set up simple password protection with no usernames for some switches in a lab, for the purpose of keeping curious co-workers from logging into the lab switches from their desktop PCs.

How are frequency and wave period related?