Answer: The longer the lever, the greater the force on the load will be.
Explanation:
Answer:
the answer to the question is a reflector
Answer:
The unit for power is the Watt
Answer:
c. nine times as low.
Explanation:
Sound intensity is defined as the acoustic power transferred by a sound wave per unit of normal area to the direction of propagation:

Since the sound wave has a spherical wavefront of radius r, then the area is given by:

Here r is the distance from the source of the sound. Thus sound intensity decreases as:
