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2 years ago

What kind of waves do light waves travel in and how do they move

1 answer:

8 0

Light is one form of energy that travels in electromagnetic waves. This energy is both magnetic and electrical. There are many different types of electromagnetic (EM) waves.

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Is this sentence true or false ? hydrogen is considered to be a metal

victus00 [196]

It is false, hope this helps!

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4 years ago

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If you know the number of protons, how do you find the number of electrons

iren [92.7K]

Answer:

to find the number of electrons you need the charge of the element.

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3 years ago

HELP ASAP 20 OR MORE POINTS!!!!

pishuonlain [190]

<h2>YeS im Am fRom pLanet k12 And brinG anD imPortant MesSage </h2>

The answer to your question is, <u><em>There are only so many ways matter can arrange itself within that infinite universe.</em></u>

<h2><em>Also if your on the same test as me heres some other sTuff that was on my test </em></h2><h2><em> </em></h2>

Question 1 (1 point)

In Brian Greene's "A Physicist Explains Why Parallel Universes May Exist", what reason does Greene give for why he believes parallel universes may exist?

<em>Answer: There are only so many ways matter can arrange itself within that infinite universe.</em>

<em> </em>

Question 2 (1 point)

Choose the best explanation for why we experience the Mandela Effect.

<em>Answer: Our brains tend to fill in information that we cannot readily recall and make associations that are not true.</em>

Question 3 (1 point)

From the article "Time Travel Is A Fun Science Fiction Story But Could It Be Real?", Albert Einstein's Theory of Relativity is described as what?

<em>Answer: The pulling force of gravity causes space to curve and causes time to slow down.</em>

Question 4 (1 point)

From the video " Are Wormholes The Answer To Time Travel?", how are worm holes described?

<em>Answer: A tunnel in space connecting two regions very distant from each other. A "short cut" through space</em>

Question 5 (1 point)

Many scientists think human cloning is possible, so why haven't we made human clones yet?

<em>Answer: Human cloning is extremely controversial and many people believe it is unethical</em>

<h2><em>HOPE THIS HELPS ANYONE IF IT DOES THANK AND RATE FOR A FREE COOKIE :D </em></h2>

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3 years ago

Read 2 more answers

On the first day of school, a class of th-grade students are given tour identical cubes of hard clay. The cubes are placed in fo

matrenka [14]

Answer:

sample 4

Explanation:

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3 years ago

A very old tree limb contains an amount of carbon-14 that is approximately 1/8 of the current atmospheric 14C levels.. Calculate

Tomtit [17]

A. The radioactive decay equation is N = N0 $e^{-ln(2)*t/T }$

where T is the half-life (5730 years), N0 is the number of atoms at time t = 0 and N is the number at time t.

Rewriting this as:

(N/N0) = $e^{-ln(2)*t/T }$

Since N = (1/8) N0 and substituting known values:

1/8 = $e^{-ln(2)*t/5730}$

Taking ln of both sides:

ln(1/8)= -ln(2)*t/5730

t = - 5730 * ln(1/8) / ln (2)

t = 17,190 years

The tree was cut down 17,190 years ago.

B. N0 = 1,500,000 carbon-14 atoms

Since N = (1/8) N0

N = 187,500 carbon atoms left

3 0

3 years ago