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valkas [14]
3 years ago
14

What is a light year??????????

Physics
2 answers:
Mkey [24]3 years ago
8 0
A light-year is a <u>distance</u>.

It's the distance that light travels through vacuum in one year.

The distance is 9.4607 x 10¹² kilometers in metric units, and 5.8786 x 10¹² miles
in 'customary' units, and is normally written without a bunch of question marks.
REY [17]3 years ago
3 0
A light year is an unit of distance.

&#10;&#10;light year  ≈  10^1^3km
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True false according to current atomic theory electrons are in fixed locations
Amanda [17]

That's <em>false.</em>  According to current atomic theory and quantum mechanics, an electron is always PROBABLY SOMEWHERE in a fuzzy foggy area around the nucleus of the atom, and that's all we can <u>ever</u> say about it.  There's no way to even TELL where the electron is, even if we <u>had</u> the technology to see things that small.

4 0
3 years ago
Newton began his academic career in 1667 for how long was he a working scientists was he a very productive scientist
taurus [48]
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6 0
3 years ago
A net force of 16 N causes a mass to accelerate at a rate of 5 m/s^2. Determine the mass.
Gnom [1K]

Answer:

So mass of the object will be 3.2 kg

Explanation:

We have net force on the object F = 16 N

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So 16=5\times m

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3 0
3 years ago
Which of these is an example of a chemical reaction that occurs at a very slow rate?
spin [16.1K]

Answer:

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8 0
3 years ago
Read 2 more answers
Pls help. This is about heat. I got the answer, just need the working
Mars2501 [29]

Answer:

See below

Explanation:

You have to heat the calorimeter to 100 C  from 20 C

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You have to heat the mass of water to boiling point (100 C ) from 20C

this will take    

    .50 kg * 4182 j/kg-C  * 80 = <u>167,280 j </u>

AND you have to add enough heat to boil off  .03 kg of water:

   .03 kg * (2260000 j/kg-C )  =<u> 67,800 j</u>

<u />

Power = joules / sec =  (6240 + 167280 + 67800) / 274.8 =<u> 878 watts </u>

<u />

<u>Your answer may differ just a bit for slightly different or rounded values of specific heat or heat of fusion for water .....</u>

7 0
2 years ago
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