Answer:
B) the natural frequency
Explanation:
The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.
Answer:
Net force = 10 N in downward direction
Explanation:
Given that,
Upward force = 10 N
Downward force = 20 N
Let downward is negative and upward is positive.
Net force = 10+(-20)
= -10 N
So, the net force is 20 N and it is acting in downward direction.
That measure is known as "acceleration"
a = ΔV / t
Hope this helps!
Answer:
Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work).
Explanation:
It is a measure of how well a machine reduces friction.
