If, for one day, ice water decided to be denser than liquid water, how will this affect our planet?

1 answer:

5 0

If ice were more dense than water, it would freeze and sink over and over until the entire lake was frozen. ... This same process occurs in the fall as the surface water cools and becomes more dense; it will sink and cause the same movement or turnover of the lake's water.

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Explain blood curculation in human body in brief (in 100 words)

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It would appear to rise from the horizon to 10° above the horizon. Keep gong north until you reach the North Pole and the pole star will appear directly overhead.

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2 years ago

what is the force needed to move a boy and his wheelchair with a combined mass of 30kg at 0.4 meters per square second

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The force needed to move a boy and his wheelchair with a combined mass of 30kg at 0.4 meters per square second is 12 newton.

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According to Newton's second law based motion "the moving object's acceleration is based upon two terms - one is the total force acting upon that object and the other one is the net mass of the object."
In mathematical term, F=ma. where F= force, m= mass, a= acceleration.
So, by performing the calculation, $\bold{\mathrm{F}=30 \times 0.4 \mathrm{N}=12 \mathrm{N}}$
12N force will move the boy along with the wheel chair.

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