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Nana76 [90]
3 years ago
11

If the temperature of a piece of steel decreases, what happens to its density? (1 point)

Physics
2 answers:
Lelechka [254]3 years ago
5 0

temperature decreases the density will increase.

zlopas [31]3 years ago
3 0
As temperature decreases, the steel will contract (volume decreases) thereby, an increase in Density.
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Crazy boy [7]
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wlad13 [49]

Answer:

a)

N_{top}=9.8N\\N_{bottom}=33.4N

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Which means:

N_{top}=m\frac{v^2}{R}-mg=(1.2kg)\frac{(6m/s)^2}{2m}-(1.2kg)(9.8m/s^2)=9.8N\\N_{bottom}=m\frac{v^2}{R}+mg=(1.2kg)\frac{(6m/s)^2}{2m}+(1.2kg)(9.8m/s^2)=33.4N

The limit for falling off would be N_{top}=0, so the minimum speed would be:

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3 years ago
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5 0
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