I A thin square steel plate 10cm on a side is heated in
a blacksmith's forge to a temperature of 800°C. If
the emissivity is 0.60, what is the total rate of
radiation of energy?
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To create electromagnetic induction, which of the following has to move? a. a wire b. a magnet c. a transformer d. either a or b

Agraduated cylinder contains 63.0 ml of water. a piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 ml. calculate the mass in grams of the gold that was added to the water. explain how you got your answer.

For most stars, what does a higher temperature tend to to with? a lower luminosity a higher luminositya red color none of the above