The speed of sound in air at sea level is approximately____________?
The speed of sound in air at sea level is approximately____________?
A. 300 meter per second
B. 320 meter per second
C. 340 meters per second
D. 370 meter per second
Similar Posts
What kind of weathering takes place on the valley side above the surface of the glacier?
What kind of weathering takes place on the valley side above the surface of the glacier?
A. Plucking
B. Abrasion
C. Chemical weathering
D. Frost shatteringThe speed of light with the rise in the temperature of the medium____________?
The speed of light with the rise in the temperature of the medium____________?
A. Decrease
B. Increase
C. Remain the same
D. First decrease then increaseWhich of the following has the highest energy?
Which of the following has the highest energy?
A. gamma rays
B. X-rays
C. Ultra-violet radiation
D. radio wavesSound of frequency below 20 Hz is:___________?
Sound of frequency below 20 Hz is:___________?A. Audiosonic
B. Infrasonic
C. Ultrasonic
D. SupersonicSounds with frequencies below 20 hertz are called infrasound. Infrasound is too low-pitched for humans to hear. Sounds with frequencies above 20,000 hertz are called ultrasound.
________ is an instrument used in determining the directions of movement of clouds.
________ is an instrument used in determining the directions of movement of clouds.A. Nephoscope
B. Stethoscope
C. Metroscope
D. None of the aboveThe audio signals of TV are _____________?
The audio signals of TV are _____________?A. Amplitude modulated
B. Frequency modulated
C. fixe modulated
D. Velocity modulated