The size and sign of the charge on an electron is the same as that for
a. a positron.
b. an antiproton.
c. an antineutron.
d. an antineutrino.
b
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A radioactive isotope is
A) an unstable nucleus that gives off radio waves B) a nucleus that formed from the fusion of two other nuclei C) a stable nucleus that is formed from the fission of a large unstable nucleus D) an unstable nucleus that spontaneously breaks apart
A series LRC ac circuit has a resistance of 4.0 k?, a capacitance of 33.0 ?F, and an inductance of 23.0 H. If the frequency of the alternating current is 2.0/? kHz, what is the phase angle between the voltage and the current?
A) -1.6 rad B) 23 rad C) 3.1 rad D) 1.5 rad
For the tapered fin shown, determine the temperature distribution, the fin efficiency, and the heat transfer through the fin.
What will be an ideal response?
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is 100 J
a. True b. False Indicate whether the statement is true or false