College students receive an average of four phone calls
1 answer:
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I think the answer is c AC power source
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Answer: Mass of the object is 75 kg.
The answer is Ultraviolet
Answer:
Protons and electrons
Explanation:
- The atoms are made up of protons, neutrons, and electrons.
- The physical and chemical characteristics of an atom are determined by the number of these particle composition.
- The protons present in the center of an atom called the nucleus is positively charged.
- The neutrons are also located in the nucleus of an atom with no charge.
- The electrons has a negative charge and it is placed around the nucleus having different shells and quantum state.
- The charges of the protons and electrons are denoted by +q and -q. The quantization of these charges are +1, +2, ... and -1, -2, .... etc.
Answer:6.298,4.1,1.9015
Explanation:
Wavelength=
=
=4.397 m
Distance of 3rd speaker from speaker A is x
From B 78-x
Difference between the distances must be a whole number of wavelengths
First
for 1 st wavelength
2x=8.2+4.397=12.597
x=6.298m
second
For zero wavelength
2x=8.2
x=4.1m
Third
x=1.9015 m
