The energy level diagram for hydrogen
The smallest energy of an absorbed photon that will raise a hydrogen atom from its ground state to its first excited state is 13.6 eV.
a.
True
b.
False
b
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A) 423 × 1011 B) 4.23 × 1010 C) 0.423 × 1013 D) 42.3 × 108
Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is closed,
A. bulb 1 glows more brightly. B. bulb 2 glows more brightly. C. both bulbs continue to glow with the same brightness. D. bulb 1 goes out. E. bulb 2 goes out.
The radio waves used to communicate with astronauts in space must be ___________ frequency waves
Fill in the blank(s) with correct word
A 75.0-kg swimmer dives horizontally off a 465-kg raft initially at rest. If the diver's speed immediately after leaving the raft is 5.00 m/s, what is the corresponding raft speed?
a. 31.0 m/s b. 375 m/s c. 0.806 m/s d. 1.24 m/s e. 5.00 m/s