A radar signal is sent into space and travels at a speed of 300,000 km/s. It takes 20 seconds for the signal to return to Earth. What is the velocity of the radar signal?

Group of answer choices

20 s

300,000 km/s

300

1

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Condensation happens when water vapor cools. true or false? ?