Which of these wins the prize as the blandest appearing planet as revealed visually by space probes?
a. Jupiter
b. Saturn
c. Uranus
d. Neptune
C
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An 8000-kg aluminum flagpole 100 m long is heated by the Sun from a temperature of 10°C to 20°C. Find the work done (in J) by the aluminum if the linear expansion coefficient is 24 × 10?6 (°C)?1. (The density of aluminum is 2.7 × 103 kg/m3 and 1 atm = 1.0 × 105 N/m2.)
A. 287 B. 425 C. 213 D. 710 E. 626
An 8 000-kg aluminum flagpole 100-m high is heated by the sun from a temperature of 10°C to 20°C. Find the increase in internal energy (in J) of the aluminum. (The coefficient of linear expansion is 24 × 10^-6 (°C)-1, the density is 2.7 × 10^3 kg/m3, and the specific heat of aluminum is 0.215 cal/g×°C.)
a. 7.2 × 10^5 b. 7.2 × 10^7 c. 7.2 × 10^3 d. 7.2 × 10^1 e. 7.2 × 10^2
A 648-g empty iron kettle is put on a stove. How much heat. in joules. must it absorb to raise its temperature from to (The specific heat for iron is 113 cal/kg ? C°, 1 cal = 4.190 J)
A) 6740 J B) 11,300 J C) 1610 J D) 16,100 J
When a liquid boils and changes to a gas, it is said to have undergone a change of ________
Fill in the blank(s) with correct word