Your answer would be D. Mechanical and Pressure/Longitudinal. This is because a sound wave is usually a type of pressure wave caused by the vibration of an object in a conductive medium such as air. These waves are also mechanical because they require a medium to travel through. This is also why sound simply cannot travel through vacuums like space, because they have no mediums in which sound can travel through.
Answer:
The answer is A. C and O..
Answer:
net outward force on a passenger's eardrum is 0.6115 N
Explanation:
Change in pressure is calculated as follows
h= height of liquid column =480 m
ρ= density of liquid= 1.3 kg/m^3
putting values we get
ΔP= 6115 Pa
Area of the eardrum is approximately
= 1 cm^2
Therefore, net force F = AΔP
=
= 0.6115 N
The gravitational potential energy of an object is given by
where m is the mass, g the gravitational acceleration and h the height with respect to a reference point.
Here we know the potential energy of the apple, U=6.0 J, its height, h=3.00 m, and
, so we can find the mass of the apple by re-arranging the formula: