Answer:
Explanation:
Given
Em wave is in the form of
where
Wave constant for EM wave k is
Wavelength of wave
Answer:
The answer is B
Explanation: Greenhouse gases must be able to change their vibrational state in order to absorb infrared radiation or heat. SO therefore helium is not one of them.
Hope this helps:)
<h2>Answer:</h2>
The feature of an object affects its weight are given below
- mass of the object
- location of the object
- how much force Earth exerts on the object
<h2>Explanation:</h2>
Weight of the body is equal to the product of gravity and the mass of it so weight is dependent upon mass. The more the mass, the more is the weight. In the same way the location of the object differs if the location is far from the earth. Similarly gravity is the force with which earth attracts everything towards its center therefore we can say that if the object moves away from the earth center the weight decreases eventually..
All substance are made from these - atoms.
Atoms make up everything, they are the tiniest elements that form something.
A single pulley changes the direction of the effort, but it has
no mechanical advantage. The output force is the same as
the input force, so we'd say that the mechanical advantage is 1.
If there are two pulleys, with the rope going up and down and
around between them several times on its way from the effort
to the load, an arrangement that I think is called 'block and tackle',
then the mechanical advantage turns out to be the number of
strands of rope that are supporting the load.