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Alona [7]
3 years ago
8

Which of the following facts about electromagnetic radiation has made it possible for scientists to gather information about Ven

us' rocky surface? A. Ultraviolet rays have wavelengths that are too short to be seen with the unaided eye. B. All light travels at the same speed through the vacuum of outer space. C. Infrared and radio waves can pass through very dense materials without interference. D. White light is made up of all the colors of the visible spectrum.
Physics
1 answer:
sukhopar [10]3 years ago
6 0

Answer:

C. Infrared and radio waves can pass through very dense materials without interference.

Explanation:

It was my study island question.

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Can a magnet attract a pure substance?
Salsk061 [2.6K]

Answer:

Magnets strongly attract materials  which already themselves have magnetic domains. They do not significantly attract many metals like gold, aluminum, silver, and even some types of high-chromium stainless-steel, which lack such domains. In fact, pure gold is slightly repelled.

Explanation:

3 0
3 years ago
A negatively charged balloon has 4 μC of charge. How many excess electrons are on this bal- loon? The elemental charge is 1.6 ×
bagirrra123 [75]
Data:

The charge of a body depends on the amount of electrons it gains or loses. Q = n * e, where "Q" is charge, "n" is the number of plus or minus electrons, and "e" is the fundamental charge of an electron 1,6 * 10 ^{-19}C<span>. To know if the body has gained or lost, we look at the signal of its charge, remembering that the electron is negative. The charge of the body is 4 μC (positive), so there is a lack of electrons! 

Q = 4 </span>μC → Q = 4*10^{-6}
e = 1,6 * 10 ^{-19}C
n = ?<span>

We have:
</span>Q = n*e
n =  \frac{Q}{e}
n =  \frac{4*10^{-6}}{1,6 * 10 ^{-19}}
n = 2,5*10^{-6-(-19)}
n = 2,5*10^{-6+19}
\boxed{n = 2,5*10^{13}electrons}
7 0
3 years ago
Develop expression for equation for uniform motion in a straight line
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According to cuneiform tablets in the ancient world, straight lines cannot cross, and no motion in the world is not relative. Btw...I KNOW!!! GOT MILK???
4 0
3 years ago
What is the energy equivalent of an object with a mass of 1.83 kg?
xxMikexx [17]
To determine the energy equivalent of an object, we use the famous equation of Einstein which is E=mc^2 where m is the mass of the object and c is the speed of light (3x10^8 m/s). We calculate as follows:

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6 0
3 years ago
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Which of the following is not a subatomic particle?
Fynjy0 [20]
D. Nucleus because it is not a part of the group.
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3 years ago
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