Answer:
The answer is "The frequency of the sound waves increases".
Explanation:
Its most oscillating their frequency waves, therefore higher the vibration we hear. However you see, sound frequency is determined through the oscillation of electrical signals while moving to our ears, which implies that perhaps the audio medium, which usually is air, makes a distinction between compression to spreading. It's the end of the communication as the frequency rises.
(a)
The radius of the sphere is:
r = 12.5 cm
So the volume of the sphere of gold is
The density of gold is
So the mass of the sphere is
(b)
The length of one side of the cube is
L = 0.049 mm = 0.0049 cm
So the volume of the cube of platinum is
The density of platinum is
So the mass of the cube is
(c) 53.5 g
The volume of the ethanol is
V = 67.1 mL
While its density is
d = 0.798 g/mL
So the mass of the ethanol is
Speed = frequency * wavelength
So frequency = speed / wavelength
f = 330 / 0.25
f = 1320 Hz