In order to be considered an ion, an atom must have a

A. Positive charge

B. Charge

C. Negative charge

D. Neutral charge

The power expended when a 10 N barbell is raised 2. 0 m in 2s is

If a suspended object A is attracted to a charged object B, can we conclude that A is charged?

How is the color of a star related to its temperature?

A body of mass 5kg falls from height of 10m above the ground what kinetic energy of the body before it strike the ground

When all the forces on an object are equal and opposite, & the net force is zero, that's ... unbalanced forces. reaction forces. terminal velocity. balanced forces.

Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.

Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?

A student builds a simple circuit and a magnet under one of the circuit wires. When the switch is closed charges flow int the circuit and the wire moves

Cite an example in which a force is exerted on an object without doing work on the object

Which equation best expresses the first law of thermodynamics, assuming Q is heat, U is internal energy, and W is work? A.ΔW = ΔQ + ΔU B.ΔW = ΔU - ΔQ C.ΔQ = ΔU+W D.ΔU=Q - W