Which of the beams is due to a positively charged helium nucleus?
A) a
B) b
C) c
D) all of the above
E) none of the above
Answer: C
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A low-luminosity star has a small and narrow ____, whereas a high-luminosity star has a large and wide one
a. UV range b. life capability c. habitable zone d. adaptable zone e. water hole
Astronomers expect that stars with multiple planets orbiting them are rare
Indicate whether the statement is true or false
A series RLC circuit contains a 20.0-V resistor, a 0.750-mF capacitor, and a 120-mH inductor. If a sinusoidally varying rms voltage of 120 V at f = 500 Hz is applied across this combination of elements, what is the rms current in the circuit?
1.2.33 A 2.6.00 A 3.10.0 A 4.17.0 A 5.none of those answers
The spacing of the surface planes of a crystal is 159 pm. A beam directed normally at the surface of the crystal undergoes first order diffraction at an angle of 58° from the normal. The diffraction is done with a beam of monoenergetic neutrons
The energy of the neutrons is closest to: A) 0.045 eV B) 0.039 eV C) 0.050 eV D) 0.056 eV E) 0.061 eV