Mars is 139.58 million miles away from the sun. mars is red because its soil has iron oxide (rust particles) in it.
200 Hz = 200 cycles per sec
<span>1 cycle, the period = 1/200 = 0.005 seconds, or 5 milli seconds.</span>
C is true, and just one of those has as much mass as about 1,840 electrons.
