A brass cube, 10 cm on a side, is raised in temperature by 150°C. The coefficient of volume expansion of brass is 57 × 10^-6/°C. By what percentage does volume increase?

a. 12%
c. 1.1%
b. 2.8%
d. 0.86%


D

Physics & Space Science

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The melting point of aluminum is 660°C, the latent heat of fusion is 4.00 × 105 J/kg, and its specific heat is 900 J/(kg K). How much heat must be added to 500 g of aluminum at 27°C to completely melt it?

A) 485 kJ B) 395 kJ C) 273 kJ D) 147 kJ E) 14 kJ

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The solar corona produces a lot more X-rays than it does visible light

Indicate whether the statement is true or false

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In the HCl molecule, the bonding electrons spend

a. equal time around both atoms. b. all their time around only one of the atoms. c. more time around the H atom. d. more time around the Cl atom.

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Explain why galaxy-galaxy interactions are far more common than star-star interactions

What will be an ideal response?

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