A solid object labeled A weighs more than another solid object labeled B. Which of the following are true?
a. A occupies more volume than B.
b. A has a greater weight density than B.
c. A has a greater specific gravity than B.
d. A has greater volume but lesser weight density than B.
e. none of the above
E
A and B are not necessarily made of the same substance.
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Hot air flows through a square 60 cm x 60 cm steel heating duct and the outside surfaces are at 45ºC when the surrounding quiescent air is at 15ºC. Estimate the heat loss from the duct per unit length of the duct.
What will be an ideal response?
A negatively-charged plastic rod is brought close to (but does not touch) a neutral metal sphere that is connected to ground
After waiting a few seconds, the ground connection is removed (without touching the sphere), and after that the rod is also removed. The sphere is now A) negatively charged. B) positively charged. C) neutral.
Clovis wants to lose weight. Clotilde tells him that he will be thin enough for her if he travels past her at 0.600 c. If the distance she sees from the front of his stomach to his back is then 24.0 cm, what distance in cm does she see when he is standing still?
a. 15.4 b. 19.2 c. 24.0 d. 30.0 e. 37.5
The latent heat of vaporization of water is roughly 10 times the latent heat of fusion of water. The amount of heat required to boil away 1 kg of water is __________ the amount of heat required to melt 1 kg of ice
a. one tenth b. equal to c. 10 times d. unrelated to