All objects have an electric charge, what are the options they could have select all that apply. Positive

Negative

Neutral​

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?