Is it possible to prove, for certain, that a scientific theory is true?
A) Yes, by means of a single confirmed experiment that verifies the theory.
B) Yes, by carrying out a sufficient number of experimental observations.
C) Yes, by deducing it logically from other scientific theories that are known to be true.
D) No, because it is always possible that a future experiment will disagree with the theory.
E) No, because of the experimental error, or uncertainty, that is always present in any experimental result.
D
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State Heisenberg's Uncertainty Principle
What will be an ideal response?
One mole of an ideal gas at 1.00 atm and 0.00°C occupies 22.4 L. How many molecules of an ideal gas are in one cm3 under these conditions?
a. 28.9 c. 2.69 × 10^19 b. 22,400 d. 6.02 × 10^23
A hunter points a rifle horizontally and holds it 3.30 m above the ground. The bullet leaves the barrel at 325 m/s and experiences no significant air resistance. The acceleration due to gravity at this location is 9.80 m/s2
(a) How long does it take for the bullet to strike the ground? (b) How far horizontally does it travel?
At which of the following temperatures would one liter of water weigh the most?
a. 2°C b. 4°C c. 8°C d. 90°C e. It would weigh the same at all these temperatures.