In a perfect vacuum, light waves travel at 300,000 kilometers every second. when light waves travel through materials, such as air, they a. speed up b. slow down c. increase in amplitude d. heat up

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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.

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