According to the Schrödinger equation, the probability of finding a hydrogen atom's ground-state electron 0.053 nm from the proton is
a. zero.
b. high, but not 100%.
c. low, but not zero.
d. 100%.
b
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A rubber rod is rubbed with fur, so that the fur becomes positive. The rod is then used to charge an electroscope. The charge on the electroscope will be
A. neutral. B. negative if charged by induction. C. positive if charged by induction. D. negative if charged by polarization. E. positive if charged by contact.
On the H-R diagram, white dwarfs lie Sirius B and Procyon B lie
A) at the top left. B) at the top right. C) close to the Sun, near the center. D) at the lower left. E) at the lower right.
A comet has an elliptical orbit around the Sun. Its total orbital energy is
A) greatest when it is farthest from the Sun. B) greatest when it is closest to the Sun. C) the same throughout its orbit.
The most distant known objects in space are called ______________
Fill in the blank(s) with correct word