The sunspot cycle averages about 11 months
Indicate whether the statement is true or false
FALSE
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What will be an ideal response?
The diagram above represents energy levels in a hydrogen atom. Each level is labeled with its energy (above the ground state of Level 1) in units of electron/volts (eV). The labeled transitions represent an electron moving between energy levels. Which transition represents an electron that is breaking free of the atom?
A) A B) B C) C D) D E) E
This figure shows Hubble's law. If a galaxy is observed to be moving away from us at 30,000 (3 104) km/s, approximately how far away is it? (Hint: Be sure to read the axis labels carefully.)
A) 30,000 light-years B) 1400 million light-years C) 3000 million light-years D) 1400 light-years
An object is placed at F in front of a concave mirror with a focal length of 10 cm. What is the position of its image in relation to the mirror and what are its characteristics?
A) = 10 cm, real, smaller than object B) = 10 cm, virtual, smaller than object C) = 20 cm, real, bigger than object D) = 20 cm, virtual, bigger than object E) = ?, real, much bigger than the object