Answer:
Δβ = 28.2 dB
Explanation:
Attached is the explanation
A) the pump removes air from the enclosure. foam absorbs vibrations from the clock
b) result is that as the air is taken out by pump, the sound of alarm reduces and eventually becomes zero. so, you cant hear the alarm ringing.
c) conclusion is that sound cant travel in vaccum and it requires a medium to travel.
There's no such thing as "an unbalanced force".
When the entire group of forces acting on an object is unbalanced,
meaning that the net force on the object is not zero, then the object
moves with accelerated motion . . . it may speed up, it may slow down,
or its speed may remain constant while its direction changes.
Answer:
Yes, you would consider the mass × gravity at the centre of gravity of the object in question to cause a moment, hence it should be included in your resolution
