Atomic Nucleus: Atomic nuclei that are all isotopes of an element all have the same
A. number of nucleons.
B. mass.
C. number of protons.
D. number of neutrons.
Answer: C
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Which planet has the lowest density?
A. Earth B. Uranus C. Saturn D. Neptune E. Jupiter
You measure the velocity of an electron to an accuracy of ±22.6 m/s
What is the minimum uncertainty in its position? (h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg) A) 5.12 µm B) 8.05 ?m C) 4.03 ?m D) 16.1 ?m E) 32.2 ?m
Under what conditions is the impedance of a series RLC circuit equal to the resistance in the circuit?
1.The driving frequency is lower than the resonance frequency. 2.The driving frequency is equal to the resonance frequency. 3.The driving frequency is higher than the resonance frequency. 4.Always. 5.Never.
What is the energy density in the magnetic field 25 cm from a long straight wire carrying a current of 12 A?
A) 7.3 × 10-5 J/ m3 B) 3.7 × 10-5 J/ m3 C) 3.6 × 10-4 J/ m3 D) 1.2 × 10-4 J/ m3 E) cannot be determined with the information given