Explanation:
The shorter wavelength electromagnetic waves from sun are absorbed by earth material in form of short wavelength and the radiated wavelength are longer ones. Also higher energy waves are of shorter wavelength and lower energy waves have longer wavelength. So, they are absorbed as short wavelength and radiated back as long wavelength.
False because compound means two so a chemical compound is made up of two chemicals
Answer: 1
Explanation:
Given
Tension is the string
mass of object
Tension is greater than the weight of the object i.e. elevator is moving upward
we can write
Answer:
The center of mass can be calculated by taking the masses you are trying to find the center of mass between and multiplying them by their positions
Answer:
See below
Explanation:
<h3>When a cold alcohol thermometer is placed in a hot liquid, the following takes place.</h3>
- The glass of thermometer expands because of the heat so the column of alcohol goes down.
- After some time, the heat travels to alcohol and then alcohol expands.
<h3><u>So, Reason why alcohol goes down first:</u></h3>
Alcohol first goes slightly down because of the expansion of the glass of thermometer before doing up.