Two kilograms of water at 100°C is converted to steam at 1 atm. Find the work done (in J). (The density of steam at 100°C is 0.598 kg/m3.)
a. 3.4 × 10^5
b. 1.2 × 10^5
c. 4.6 × 10^4
d. 2.1 × 10^4
e. 3.4 × 10^4
A
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Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system.
Three pith balls supported by insulating threads hang from a support. We know that ball X is positively charged. When ball X is brought near balls Y and Z without touching them, it attracts Y and repels Z. Since pith is an insulating material, we can conclude that
a. Y has a negative charge. b. Z has a negative charge. c. Y has a positive charge. d. Z is neutral (has no net charge.) e. Y is negatively charged or neutral (has no net charge.)
Kinetic energy is conserved in
a. an inelastic collision b. an elastic collision c. any collision where two objects rebound off each other d. none of the above
A 12-oz can of soft drink contains about
A. 10 Calories B. 50 Calories C. 150 Calories D. 2000 Calories