What is the energy of a photon that, when it is absorbed by a hydrogen atom, excites an electron from the ground state of the hydrogen atom to the n = 2 state?
A) 10.2 eV
B) 1.63 × 10-18 J
C) 1.63 × 10-18 Nm
D) All of the answers are correct.
E) None of the answers is correct.
D
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In an "atom smasher," two particles collide head on at relativistic speeds
If the velocity of the first particle is 0.741c to the left, and the velocity of the second particle is to the right (both of these speeds are measured in Earth's rest frame), how fast are the particles moving with respect to each other? A) 0.866c B) 1.091c C) 0.883c D) 0.788c
Indicators of Slope Failure
What will be an ideal response?
The most southern latitude from which an observer on Earth can see the North Star (Polaris) is
a. 66.5°S. b. 23.5°S. c. 0°. d. 23.5°N.
One way to correct chromatic aberration is to
A. Use white light B. Use 2 converging lenses C. Use a converging lens and a diverging lens D. Only allow light to go through the center of the lens