A radio station broadcast at a frequency of 3.0*10^4hs . What is the velocity of the wave if it’s wavelength is 2.5cm?

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Explain why electric current cannot exist if a current doesn't have a voltage source.