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RSB [31]
4 years ago
13

Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink?

Physics
2 answers:
Reptile [31]4 years ago
3 0
Density! I’m good at these!
Pavel [41]4 years ago
3 0
It’s density or climate
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Heat is transferred from molecules with more kinetic energy to molecules with _________kinetic energy.
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Answer:

low

Explanation:

the higher the kinetic energy, the More the vibration of molecules, thus heat is more on the side with highly vibrating molecules

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Red shift data shows that galaxies are O expanding O shrinking O moving away O moving closer
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Explanation:

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What is the refraction index of a medium?
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What is pressure?
viva [34]

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Explanation:

3 0
3 years ago
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Similar to what you see in your textbook, you can generally omit the multiplication symbol as you answer questions online, excep
lidiya [134]

Answer:

ma= ma

m⋅a = m⋅a

And equivalently:

am=ma

a⋅m = m⋅a

Explanation:

Question

Assuming this question "Similar to what you see in your textbook, you can generally omit the multiplication symbol as you answer questions online, except when the symbol is  needed to make your meaning clear. For example, 1*10^5 is not the same as 110^5 . When you need to be explicit, type * (Shift + 8) to insert the multiplication operator. You will see a multiplication dot (⋅) appear in the answer box. Do not use the symbol x. For example, for the expression ma,

typing m⋅a would be correct, but mxa would be incorrect".

Solution to the problem

For this case we want to write a expression for ma, and based on the previous info we can write:

ma= ma

m⋅a = m⋅a

And equivalently:

am=ma

a⋅m = m⋅a

But is not correct do this:

mxa=mxa

axm = mxa

8 0
3 years ago
Read 2 more answers
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