Why doesn't the uncertainty principle affect our ability to follow the path of a baseball?
A) The uncertainty principle applies only to subatomic particles.
B) The uncertainties in all the individual atoms within the baseball cancel each other out.
C) The uncertainties in the position and momentum of the baseball are so small in comparison to its size and total momentum that they are unnoticeable.
D) The exclusion principle says that large objects are excluded from the consequences of the uncertainty principle.
E) The uncertainty principle does not have anything to do with following the path of a particle or an object.
C
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Two parallel conducting plates are separated by 1.0 mm and carry equal but opposite surface charge densities. If the potential difference between them is 2.0 V
what is the magnitude of the surface charge density on each plate? (?0 = 8.85 × 10-12 C2/N • m2) A) 18 nC/m2 B) 0.13 mC/m2 C) 35 nC/m2 D) 0.27 mC/m2
Most neutron stars are the remnants of _____ explosions
a. type II supernovae b. type Ib supernovae c. type Ia supernovae d. novae e. planetary nebulae
A bright red nebula is called an HII region when it contains
A. molecular hydrogen gas, H2. B. hydrogen atoms which have been ionized by ultraviolet radiation. C. hydrogen which is generating 21-cm radio waves. D. hot hydrogen gas thermally glowing.
The greenhouse effect keeps the surface of ________ warmer than it otherwise would be.
A. Mercury B. Earth C. Venus D. All of these choices are correct. E. None of these choices is correct.