Answer:
The number of neutrons or electrons in an atom can change without changing the identity of the element.
Answer:
Option B and Option C
Explanation:
As we know that the wavelength of light is dependent on its speed. In fact the wavelength of light is directly proportional to the speed of the light. If the speed increases, the wavelength will also increase. While moving from air to acetone the speed of light reduces, and hence the wavelength reduces.
Wavelength is inversely proportional to the frequency. In acetone, the wavelength of light reduces, thus the frequency must increase and it should be higher than the frequency of light in air.
Option B and C are correct
Answer:
Explanation:
Given
diameter 
density 
frequency 
Length of silk strand 
Velocity in the string is as follows
The expression for Fundamental Frequency
Squaring
It represents the distance and time, x, Y show that
The answer is probably going the be C. Friction
It is like tranferring energy to another object
Brainliest if it is correct
