A bag of potato chips contains 2.00 L of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0°C
What will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00°C and atmospheric pressure is 70.0 kPa? Assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air. (1 atm = 1.01 × 105 Pa)
A) 4.13 L
B) 1.01 L
C) 1.38 L
D) 2.76 L
Answer: D
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A plane has an airspeed of 142 m/s. A 16.0 m/s wind is blowing southward at the same time as the plane is flying. If the velocity of the plane relative to Earth is due east, what is the magnitude of that velocity?
A) 16.2 m/s B) 16.0 m/s C) 158 m/s D) 141 m/s E) 48 m/s
A polymer with a high % of crystallinity has a _____________hardness than does the same polymer that is less crystalline.
Fill in the blank(s) with the appropriate word(s).
What is the kinetic energy of a 0.135 kg baseball thrown at 40.0 m/s?
a. 54.0 J b. 87.0 J c. 108 J d. 216 J
The following images were all taken by spacecraft. Which one shows a comet?
