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2 years ago

11

Convection can occur in which two substances?

2 answers:

Ostrovityanka [42]2 years ago

5 0

Convection can't occur in solids because the atoms in a solid objects cannot move from where they are and that's needed in the process of convection, so that rules out wood and ice so the answer is D) air and water.

algol132 years ago

3 0

D) Convection can't occur in solids because the atoms in a solid objects cannot move from where they are and that's needed in the process of convection, so that rules out wood and ice so the answer is D) air and water.

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Who exerts more pressure? a) A girl of 50 kg, wearing heels with an area of 1 cm2. b) An elephant of 4000 kg with foot area of 2

Mrrafil [7]

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<u>Girls</u>

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<u>Force</u><u> </u><u>=</u><u> </u><u>mg</u><u> </u><u>=</u><u> </u><u>4</u><u>0</u><u>0</u><u>0</u><u>0</u><u>N</u>

<u>Pressure</u><u> </u><u>=</u><u> </u>

<u> $\frac{40000}{2.5 \times {10}^{ - 2} }$ </u>

<u> $= 1.6 \times {10}^{6}$ </u>

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