An am radio station broadcasts news at 650 khz. what is the frequency of this radio wave in hertz?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

What three things does a balanced equation show you?

Sandy is building a small toy car. he wants to use a balloon to power the toy car. he fills a balloon with air and then attaches a straw to the balloon. he tapes the balloon-straw combination to the car and then releases the end of the balloon. the toy moves forward as the air from the balloon comes out the back of the straw. what can sandy do to make the toy car move faster? a) use less air in the balloon. b) blow up the balloon more. c) use a longer straw. d) use larger tires.