Question 1
An 8 000-kg aluminum flagpole 100-m long is heated by the sun from a temperature of 10°C to 20°C. Find the heat transferred (in J) to the aluminum if the specific heat of aluminum is 0.215 cal/g⋅°C.
◦
7.2 × 105
◦
7.2 × 107
◦
7.2 × 103
◦
7.2 × 101
◦
7.2 × 102
Question 2
Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. Sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. Which one, if either is correct?
◦
Beryl, because low thermal conductivity results in low heat transfer.
◦
Beryl, because low thermal conductivity results in high heat transfer.
◦
Sapphire, because low thermal conductivity results in low heat transfer.
◦
Sapphire, because low thermal conductivity results in high heat transfer.
◦
Neither, because low heat transfer is desirable both in summer and in winter.
Smallest Snake in the world
Median Age at First Marriage in the United States
Buying A House: Institutional Discrimination and Predatory Lending
Thermal denaturation of BPTI
Remote satellite monitoring of gross primary productivity across the United States. The differences