Spectral Series: What value of n corresponds to a wavelength of 922.7 nm in the Paschen series?
A. 3
B. 5
C. 7
D. 9
E. 15
Answer: D
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What terrestrial world is shown in this visible-light photo?
A) Venus B) Earth C) Mercury D) Mars
If the sky appears to be completely gray during the day, what types of clouds are present?
What will be an ideal response?
It takes 4.00 minutes to fill a gas tank with 50.0 liters of gasoline. If the pump nozzle is 1.35 cm in radius, what is the average speed of the gasoline as it leaves the nozzle? (1 000 liters = one cubic meter)
a. 3.64 m/s b. 0.364 m/s c. 21.8 m/s d. 1.36 m/s e. 12.5 m/s