Advertisements
Advertisements
Question
A jet aircraft flies at a speed of 410 m/s. What is this speed known as?
Solution
Supersonic speed, because 410 m/s is higher than the speed of sound in air (340 m/s).
APPEARS IN
RELATED QUESTIONS
A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
Describe an experiment to show that sound can travel in water.
Write the approximate speed of sound in water .
What is the speed of sound :
(a) in air?
(b) in water?
(c) in iron?
Which of the following travels slowest in air and which one fastest? Supersonic aircraft, Light, Sound
Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
Fill in the blank with suitable word :
The speed of sound in a solid is ............... than the speed of sound in air.
Fill in the blank and explain.
The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.
The speed of sound in air at 0°C is 332 m/s. If it increases at the rate of 0.6 m/s per degree, what will be the temperature when the velocity has increased to 344 m/s?
A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is _____.
