PHYSICS HIGH SCHOOL

An electromagnetic am band radio wave could have a wavelength of?1) .005m
2) 5m
3) 500m
3) 5,000,000m

Answers

Answer 1

Answer:

An electromagnetic am band radio wave could have a wavelength of 500m, i.e., 500 meters(Option 3).

What is wavelength?

A wavelength is a disturbance that travels into space with a given frequency and amplitude.

Electromagnetic wavelengths can be classified depending on their type of frequency.

In conclusion, an electromagnetic am band radio wave could have a wavelength of 500m (Option 3).

Learn more about electromagnetic wavelengths here:

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Answer 2

Answer: The frequency of choice-3 is

(3 x 10⁸ m/s) / (500 m) = 600,000 Hz.

That number is the 600 near the bottom of the AM radio dial.

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Answers

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If critical mass is reached, it can cause: A: electrons to split
B: a chain reaction
C: a fusion of uranium nuclei
D: krypton atoms to split into strontium and xenon

Answers

The correct answer is:

B: a chain reaction

Explanation:

A chain reaction is a series of reactions where a reactive output or by-product produces additional reactions to earn a place. In a chain reaction, extremely feedback leads to a self-amplifying series of events.

Chain reactions are one way that systems which are not in thermodynamic stability can release energy or improve entropy in order to enter a state of greater entropy.

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What is the largest speed this projectile can have without causing the cable to break?

Answers

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What is the kinetic energy of a toy truck with a mass of 0.75 kg and a velocity of 4 m/s? (Formula: )

Answers

The answer is 6 Joules. The kinetic energy (KE) of an object is the product of half of the mass (m) of the object and the square of its velocity (v²): KE = 1/2m*v². We know that m = 0.75 kg and that v = 4 m/s. Therefore, KE = 1/2 * 0.75 kg * (4 m/s)² = 1/2 * 0.75 kg * 16 m²/s² = 6 kg*m²/s² = 6 J.

Answer:

Explanation:

jus took the test :)

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Answers

Machines make work easier even if they still require the same amount of work to be done. We humans get tired because we do not have constant source of energy for the work to be done.Machines have a constant source of energy such as electricicity. Humans too will work at the same rate without getting tired if they are also provided with constant energy.

well machine do not feel pain of course and us humans and people do feel pain of course but if we fell pain and get hurt it slows down the process but machines on the other hand can keep going until the life source runs out. if i helped plz make mine the best

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