You buy a AA battery in the store, and it is marked 1.5 V. If this marking is strictly accurate, while this battery is fresh
A) its terminal voltage will be less than 1.5 V when it is used in a circuit.
B) its terminal voltage will be more than 1.5 V when it is used in a circuit.
C) its terminal voltage will be 1.5 V when it is used in a circuit.
A
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The best evidence for quarks comes from
A. the decay of electrons into quarks and mesons. B. scattering experiments performed at very high energies. C. theories that would not make sense if quarks did not exist. D. particles seen outside the nucleus with charge 1/3 the charge of a proton.
Which of the following is a general difference between a planet and a star?
A) Stars shine with energy released by nuclear fusion while planets shine primarily with light reflected from stars. B) Stars are found in galaxies, but planets are not part of galaxies. C) Stars are made of gas and planets are made of rock. D) Stars are stationary while planets orbit stars.
After a rock thrown straight up reaches the top of its path and then falls a short distance, its acceleration is (neglect air resistance)
A) greater than at the top of its path. B) less than at the top of its path. C) the same as at the top of its path.
If a doubly-ionized oxygen atom (O–2) is accelerated from rest by going through a potential difference of 32 V, what will be the change in its kinetic energy?
a. 16 eV b. 32 eV c. 64 eV d. 51 eV e. none of the above