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antoniya [11.8K]
3 years ago
7

HELP PLEASE!!!!

Physics
2 answers:
Archy [21]3 years ago
6 0
<span>Suppose you mixed two chemicals in the lab until you could not tell the two apart. After some time passed, a white powder formed which would not dissolve, and settled on the bottom. The mixture was first homogeneous then heterogeneous. </span>
Leokris [45]3 years ago
5 0
The answer is C. Homogeneous, heterogeneous

Since you could not tell the two apart we can easily determine that it was at a homogeneous state, once we could determine that there is a different substance visible, we can determine that it is in fact heterogeneous
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Rasek [7]

Answer:B

Explanation:

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3 years ago
Which explains why more energy is released in nuclear reactions than in chemical reactions? Chemical reactions are always endoth
Natali [406]
More energy is released in nuclear reactions than in chemical reactions; this is because in nuclear reactions, mass is converted to energy. Nuclear energy released in nuclear fission and fusion is several 100 million times as large as an ordinary chemical reaction like the combustion process. The reason why nuclear energy release so much energy is because tremendous amounts of energy is released at one time. The nuclei in a nuclear reaction undergo a chain reaction, causing the neutrons to move extremely fast and release high amounts of energy. 
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4 years ago
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Lelu [443]
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3 years ago
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Luden [163]
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3 years ago
Calculate the angular velocity of the neptune (orbital period of 165 earth period) in its orbit around the sun.
ludmilkaskok [199]
The correct answer is: Angular velocity =  1.208 * 10^{-9} rad/s

Explanation:
The angular velocity is given as:
ω = \frac{2\pi}{T} --- (1)

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Plug in the value in (1):
ω = \frac{2\pi}{5203440000} = 1.208 * 10^{-9} rad/s
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