Answer:
1. Electromagnetic spectrum
2. Electromagnetic radiation
3. Radiant energy
4. Infared waves
5. Electricmagnetic radiation or Infared waves
6. Radio waves
7. Gamma rays
8. Radio waves
9. Ultraviolet rays
10. This is because it doesn’t contain water or a substance.
11. You should use sunscree and a hat to protect your skin from UV light that might cause skin cancer.
Hope this helps
Answer:
(a) Both the charges are positive or negative.
(b) Teh value of each charge is 1.53 x 10^-5 C.
Explanation:
Spring constant, K = 340 N/m
Natural length, L = 0.4 m
stretch, y = 0.033 m
(a) Let the charge on each sphere is q and they repel each other so the nature of charge of either sphere may be both positive or both negative.
(b) The electrostatic force is balanced by the spring force.

Explanation:
average speed = total distance travelled / total time travelled
time to travel the first 6km: 6 / 50 = 3/25 (h)
time to travel the next 6km: 6 / 90 = 1/15 (h)
[I think there's problem in the question 'cause 900km/h sounds impossible for normal person to travel in normal condition]
The total time: 3/25 + 1/15 = 14/75 (h)
Average speed over the 12 km drive will be:

Real gases are those, which deviate from ideal behavior.
Answer: Option D
<u>Explanation:
</u>
Very tiny particles are present in real gases and occupying finite space by exerting some specific interactions between them. It takes as the reason for why it deviates from its behaviour. There is a lot of difference between a real gas and ideal gas. Ideal gas is the one that which is imaginary, and does not exist. Its characteristics are ideal, and all other real gases, try to follow them.
Real gases, are available in the atmosphere, but need not be naturally available. There is no relation between number of protons and nature. And, they won’t behave ideally, at any conditions. We calculate the characteristics of a real gas using ideal gas equation, only because it is very difficult to determine their behaviour.