Which statement is true of an object in equilibrium?
a.
the sum of all the horizontal forces is nonzero.
b.
the sum of all the vertical forces is nonzero.
c.
the sum of all forces acting on the object is zero.
d.
at least one of the forces acting on the object is zero.

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?

The movement of electrons between atoms is called an

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe