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dimaraw [331]
3 years ago
12

An elements atomic number is 85 how many protons would an atom of this element have?

Physics
2 answers:
garik1379 [7]3 years ago
5 0

85 protons are in astatine have.

ArbitrLikvidat [17]3 years ago
3 0
The atomic number and number of protons is the same thing :)

So here, your atom would have 85 protons.
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We know the answer doesn't have to do with force because we have not identified a positive or negative axis. 

Depending on what the system we are evaluating is, the sign of the work can change.

If work is done on the system, it is negative, but if work is done by the system, it is positive. 

If the system we are evaluating is the leash, the work is being done by the leash, and therefore, the work is positive.

If the system we are evaluating is the dog, the work is being done on the dog, and therefore, the work is negative.


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3 years ago
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The stopping distances associated with slower speeds approximate the forward visibilities provided by low beam lights. However,
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Answer:

a. True

Explanation:

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So, in order to avoid any accident the illumination distance must be greater than the stopping distance. So, the driver can stop the vehicle in time, when he sees something in front of it.

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Hence, the correct option is:

<u>a. True</u>

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3 years ago
An electric current is created in a long thin wire. How will increasing the current and changing the direction of the current ef
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Answer:

Explanation:

Answer:

Explanation:

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For a very large half life, it would take a very long time for the radioactive nuclide to decay to half.

With each half life reached, a new set of daughter cell is formed. Atoms that have short half life would decay rapidly. Every radionuclide has its own characteristic half-life.

If the number of half-lives increases, then the number of radioactive atoms decreases, because approximately half of the atoms' nuclei decay with each half-life. With this observation, we can hypothesise and conduct experiment to support the assertion that as the number of half-lives increases then the number of radioactive atoms decreases.

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