<h2>Answer:</h2>
The part of the electromagnetic spectrum usually used for communication is of radio waves, infrared waves and microwaves.
But most common waves used in communication are radio waves.
<h3>Explanation:</h3>
- Radio waves are used to transmit television and radio programmes.
- While microwaves are used for mobile phones and Wi-Fi.
- Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.
- Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz).
This question involves the concepts of the thin lens formula, focal length, and image distance.
The image of the house is "16 ft" away from the lens.
According to the thin lens formula:
where,
f = focal length = 8 ft
p = object distance = 16 ft
q = image distance = ?
Therefore,
<u>q = 16 ft</u>
Learn more about the thin lens formula here:
brainly.com/question/3074650
Answer:
Chemical energy
Explanation:
The energy in the torch is stored as chemical energy before the torch gets switch on.
The chemical energy energy in the battery of cell will power the cell and allows it to produce light.
- Chemical energy is a form of potential energy.
- The electrolytes within the battery are capable of producing electric current.
- So the chemical energy is transformed into electrical energy which is used to produce the light of the torch.
Would that be 10?
.1 second per revolution, so 10 rps
Im positive that the answer is b