Question

What are:

1. Ultrasonic wave.
2. supersonic speed

Answer 1

Ultrasonic Waves:

1. Ultrasonic waves are defined as “inaudible sound with a high frequency. It has a frequency of more than 20 kHz.
2. Ultrasonic waves are incapable of travelling through vacuum.

Supersonic speed:

1. Supersonic travel is a rate of travel of an object faster than the speed of sound (Mach 1).
2. For objects travelling in the dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 343 m/s, 1,125 ft/s, 768 mph, 667 knots, or 1,235 km/h.