Answer:
887.1Hz
Explanation:
Given parameters:
Speed of sound wave = 330m/s
Wavelength = 0.372m
Unknown:
Frequency = ?
Solution:
To solve this problem, we use the expression below:
Speed = Frequency x wavelength
330 = Frequency x 0.372
Frequency = 887.1Hz
If they both are moving with the same speed and direction
i.e. covering the same distance in the same time interval in the same direction
Your weight pushing down on the chair is the action force. The reaction force is the force exerted by the chair that pushes up on your body.