Question
The "pitch" of a sound is most closely related to Its: velocity amplitude frequency Which of the following most accurately describes what a car radio does? converts radio waves to sound waves convert sound waves to radio waves converts dB to dB(A) The frequency range for ideal human hearing is: 20 Hz - 2000 Hz 20 Hz - 20,000 Hz 200 Hz -20,000 Hz 20 KHz is the same as: 2,000 Hz 20,000 Hz 200,000 Hz Based on the Doppler effect if you move toward a stationary sound source, the perceived frequency will increase decrease remain the same 0.00001 watts/m^2 is the same as: 70dB 80dB 90dB The threshold of hearing is: 0w/m^2 1 times l0^12 w/m^2 l times l0^2w/m^2 The speed of sound in this room is closest to: 750 ft/s 750 mi/hr 1100 mi/hr In this room which travels faster? sound light
Explanation / Answer
The Pitch of a sound is closely related to c) frequency
A car radio a) Converts radio waves to sound waves
The frequency range of ideal human hearing is b)20Hz - 20,000 Hz
20 KHz is same as b)20,000Hz
Based on the doppler effect if you move towards a stationary sound source , the percieved frequency will a) increase.
0.00001 W/m2 is same as a.) 70 dB
The thresold of hearing is c) 1 x 10-12 Watts/m2
The speed of sound in this room is b)750 mi/hr
In this room light travels faster