Answer:
Explanation:Let me tell you the logic you need for this: If the boy hears an echo, this means ... 100 m from a tall building claps his hands and hears an echo 0.6 seconds later. ... you can find the rate of travel (meters travelled per second) dividing the total ... the speed of sound in a hypothetical silent craft
A.) It is a constant when the light is traveling in a vacuum
Explanation:
The speed of light is a constant when light is traveling in a vacuum. It is taken as 3 x 10⁸m/s in a vacuum.
- The speed of light is a constant in a vacuum.
- It measures the rate at which light is propagated in space.
- It is used for a number of scientific calculations and deductions.
- In astronomy, it is used as a basis for measuring time.
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Properties of electromagnetic waves brainly.com/question/12450147
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<u>Answer:</u>
• black hole - one of the most dense objects in the universe
• red giant - a very large star
• white dwarf - an old, very dense hot star that is cooling
• nebula - a mass of gas and dust
The quarks that compose a baryon may have negative and positive charges of +(2/3)e, -(1/3)e.
<h3>What is a quark?</h3>
A quark is a type of particle that forms protons and neutrons and combines to generate particles called hadrons.
Protons and neutrons may be formed by up quarks and down quarks that have a charge equal to -1/3e.
In conclusion, the quarks that compose a baryon may have negative and positive charges of +(2/3)e, -(1/3)e.
Learn more about quarks here:
brainly.com/question/1472008
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