What is the frequency of a wave that has a speed of 784 m/s and wavlength of 71? Show your work

In order to place a satellite into orbit, it requires enough fuel to supply the necessary mechanical energy. into what types of mechanical energy does the fuel get transformed?

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h

If the new moon happens on january 15th, what shape will it be on february 6th?