Consider two different isotopes of the same neutral element. Which statements about these isotopes are true? (There may be more than one correct choice.)
A) Both isotopes contain the same number of orbital electrons.
B) The sum of the protons and neutrons is the same for both isotopes.
C) Both isotopes contain the same number of protons.
D) Both isotopes contain the same number of neutrons.
E) Both isotopes contain the same number of nucleons.
A, C
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Two identical charges, 2.0 m apart, exert forces of magnitude 4.0 N on each other. The value of either charge is:
A) 1.8 × 10-9 C B) 2.1 × 10-5 C C) 4.2 × 10-5 C D) 1.9 × 105 C E) 3.8 × 105 C
When the nucleus of an atom emits only a gamma ray, the atom's atomic number
A) decreases. B) remains unchanged. C) increases.
A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion. The net force points downward
a. True b. False Indicate whether the statement is true or false
If an AC circuit consists of a 220 mH inductor in series with a 75 kresistor and an AC generator with rms voltage of 12 V. If the frequency of the generator is 25 kHz, what is the rms voltage drop across the resistor?
A. 7.0 V B. 9.4 V C. 2.6 V D. 5.0 V