The frequency, or number of waves that pass a given point per second, of sound is measured in: O A. frequencies O B. cycles O C. hertz O D. meters

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

What causes the formation of ocean currents?