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Alina [70]
3 years ago
6

The nucleus of an atom contains a. only neutrons b protons and neutrons

Physics
2 answers:
inn [45]3 years ago
8 0

Protons and neutrons.

nata0808 [166]3 years ago
3 0
B. protons and neutrons
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Which of these is true about kinetic energy but not necessarily true about potential energy
cestrela7 [59]

Kinetic energy is never negative, but potential energy can be.

Potential energy depends on height above some reference level,
and you can pick any level you want as the reference.  So, if the
object is below the reference level you pick, then its potential
energy relative to your reference level is negative. 

What that means is:  You have to lift it / do work on it / give it more
energy than it has now ... in order to move it to the reference level.

(That's exactly the situation with electrons bound to an atom.  Their
energy is considered negative, because we have to do work and
give them more energy to rip them away from the atom.)
_____________________________________

Regarding the other choices:

-- Kinetic energy is scalar ... Yes.  So is potential energy.

-- Kinetic energy increases with height ...
   No. It doesn't, but potential energy does.

-- Kinetic energy depends on position ...
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3 0
3 years ago
A<br> Н20= C=1 h=4 o=4<br> 2.<br> H3PO4 +<br> КОН<br> KзРО І
maks197457 [2]

Answer:

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Explanation:

7 0
3 years ago
An airplane with constant speed 696 mph than another 40 minutes constant speed 804 mph what is distance it go?
sleet_krkn [62]

Answer:

536 miles

Explanation:

If the airplane is running at a speed of 804 miles per hour, and covers a distance, x in a particular number of mile. The distance in mile can be gotten they the application of direct formula. Multiplying the speed by the time it took, and thus

804 mph * 40

Remember the time is in minutes and not hours, so, you convert it to hours.

804 * 40/60 hours =

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6 0
3 years ago
A student thinks that scientific theories are not reliable sources of information, since scientists tend to argue about the deta
Nadusha1986 [10]
A theories are information
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What would make oppositely charged objects attract each other more?
masya89 [10]

Answer:

the attraction between N and S poles

6 0
3 years ago
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