A boat is floating in a small pond. The boat then sinks so that it is completely submerged. What happens to the level of the pond?
a. It increases.
b. It decreases.
c. It stays the same. d. In some cases it would decrease, in others it would stay the same. e. In some cases it would increase, in others it would stay the same.
B
You might also like to view...
Consider again the objects you ranked by distance in Part A. Suppose each object emitted a burst of light right now. Rank the objects from left to right based on the amount of time it would take this light to reach Earth, from longest time to shortest time.
A beaker is filled to the 500-ml mark with alcohol. What increase in volume (in ml) does the beaker contain when the temperature changes from 5°C to 30°C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) ?alcohol = 1.12 × 10?4/°C
A. 0.47 B. 0.93 C. 1.4 D. 1.7 E. 2.5
A sample of U235 that is below the critical mass will not sustain a chain reaction because
A. too many neutrons escape through the surface of the sample without initiating fission. B. the heat produced by the spontaneous fission of some nuclei is insufficient. C. the inertia of the sample is too low for efficient fission. D. nuclei repel each other due to their positive charges.
The hydrogen in the universe was formed by
a. the energy of the Big Bang c. radioactive decay of heavy elements b. nuclear fusion reactions in stars d. none of the above