What conditions must be met in order for work to be done?

check all that apply.

a. the output force must be greater than the input force.

b. at least part of the applied force must be in the same direction as the movement of the object.

c. the work must be greater than the momentum

d. the applied force must make the object move.

When objects are charged by they do not need to touch each other. a. friction b. induction c. conduction d. all of these

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?