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Question 1 To fully describe the ejection of electrons from a metal's surface, scientists must consider which of the following to be quantized?

Question 1 To fully describe the ejection of electrons from a metal's surface, scientists must consider which of the following to be quantized? 

A.Neither light nor matter

B.Both light and matter

C.Light only

D.Matter only


Question 5 How does the electrostatic force compare with the strong nuclear force in the nucleus of an atom? 

A.The electrostatic force is only repulsive and acts over shorter distances.

B.The electrostatic force is only repulsive and acts over longer distances.

C.The electrostatic force acts over longer distances and is stronger.

D.The electrostatic force acts over shorter distances and is weaker. 


Question 6 Which statement correctly compares nuclear fission with nuclear fusion?

A.Both nuclear fission and nuclear fusion produce energy from matter.

B.Nuclear fission uses a common isotope, and nuclear fusion uses a rare isotope.

C.Nuclear fission reactions demonstrate the conservation of atomic number, and nuclear fusion reactions do not.

D.Nuclear fission forms a larger nucleus, and nuclear fusion forms smaller nuclei.


Question 13 How does quantum theory explain the emission spectra of atoms?

A.Electrons absorb the energy they need to jump to a higher energy level from any light source.

B.A single, specific amount of energy is associated with each movement of an electron between energy levels.

C.The movement of an electron between energy levels occurs gradually as small amounts of energy are absorbed.

D.Electrons gain and release energy in a slow, continuous fashion.


Question 17 Which of the following accurately states the claim made by special relativity?

A.The speed of light in a vacuum is the same for stationary frames of reference.

B.The speed of light in a vacuum is slower for frames of reference that have a constant velocity.

C.The speed of light in a vacuum is faster for accelerating frames of reference.

D.The speed of light in a vacuum is the same for all frames of reference.


Question 20 Special relativity cannot be used to study an object in which frame of reference?

A.A frame of reference that has a constant, positive velocity

B.A frame of reference that has a constant, positive acceleration

C.A frame of reference that has zero velocity

D.A frame of reference that has a constant, negative velocity


Question 23 Testing shows that a sample of wood from an artifact contains 12.5% of the original amount of carbon-14. Given that the half-life of carbon-14 is 5730 years, how old is the artifact?

A.11,460 years

B.17,190 years

C.22,920 years

D.5730 years

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