Consider two neighboring rectangular houses built from the same materials. One of the houses has twice the length, width, and height of the other.
Under identical climatic conditions, what would be true about the rate that heat would have to be supplied to maintain the same inside temperature on a cold day? Compared to the small house, the larger house would need heat supplied at A) twice the rate.
B) 4 times the rate.
C) 16 times the rate.
D) 6 times the rate.
E) 8 times the rate.
Question 2Consider a classroom 10.0 m long by 6.0 m wide by 4.0 m high at room temperature 20.C and 1.0 atmosphere.
(a) How many moles of gas are contained in the room?
(b) Assuming an average molecular weight of 28, what is the mass of the room air?
Question 3A piece of metal at 80C is placed in 1.2 L of water at 72C. The system is thermally isolated and reaches a final temperature of 75C. Estimate the approximate change in entropy for this process.
What will be an ideal response?
Question 4When a dielectric material is introduced between the plates of a parallel plate capacitor the capacitance increases by a factor of 4. What is the dielectric constant of the material introduced between the plates?
A) 0.4
B) 1/4
C) 2
D) 4
E) None of the other choices is correct.
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