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S_A_V [24]
3 years ago
7

How much heat is absorbed by a 34g iron skillet when its temperature rises from 11oC to 26oC?

Physics
1 answer:
trasher [3.6K]3 years ago
4 0
Answer is: 229,5 J of <span>heat is absorbed.
</span>m(mass of iron - Fe) = 34 g.
ΔT(<span> change in temperature)</span> = 26°C - 11°C = 15°C.
cp( specific heat capacity for iron) = 0,450 J/g·°C.
Q(<span> heat absorbed)</span> = m(Fe) · ΔT · cp.
Q = 34 g · 15°C · 0,450 J/g·°C.
Q = 229,5 J = 0,2295 kJ.
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A 1.00-kg mass is attatched to a string 1.0m long and completes a horizontal circle in 0.25s. What is the centripetal accelerati
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-- The string is 1 m long.  That's the radius of the circle that the mass is
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</span>
That's it.  It takes roughly a 142-pound pull on the string to keep
1 kilogram revolving at a 1-meter radius 4 times a second !<span> 
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If you eased up on the string, the kilogram could keep revolving
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You also need to be very careful with this experiment, and use a string
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