Explanation:
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Answer:
the first one would
Explanation:
air resistance and the second would be gravity or mass
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Answer:
B
Explanation:
It will give the of 6 which is least of all the other forces.
4.0²+4.0² = c²
6 = c
Refraction is the bending of a wave when it enters a medium where its speed is different. This phenomenon is explained by the conservation of energy and conservation of momentum.
Law of Conservation of energy states the total energy of an isolated system remains constant.
law of conservation of momentum states that in a closed system the total momentum is constant.
<span>In refraction, when a medium changes, the phase velocity also changes but its frequency does not; it remains constant. </span>
Answer:<span>Humid air is lighter, so it has lower pressure.
The reason is the molecules of water are H2O, whose molar mass is 18 g/mol.
These molecules displaces molecules of N2 and O2, whose molar masses are:
N2: 2*14g/mol = 28 g/mol, and
O2: 2*16g/mol = 32 g/mol.
Then molecules of 28g/mol and 32 g/mol are being replaced with molecules of 18g/mol, leading to a lower weight of the same volume of air, which results in lower pressure.
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