What is the exoplanet orbital period and the percent brightness drop for the case in the image above from the Kepler Exoplanet Transit Hunt activity?

A: 60 days and 0.15%

B: 20 days and 0.15%

C: 10 days and 0.15%

D: 5 days and 0.30%

E: 60 days and 0.30%

A: 60 days and 0.15%

B: 20 days and 0.15%

C: 10 days and 0.15%

D: 5 days and 0.30%

E: 60 days and 0.30%

In the inverse square law activity above, what would the wattage of the top lightbulb need to be such that it appeared as bright as the bottom lightbulb which is a 25 Watt bulb?

A: 400 Watts

B: 100 Watts

C: 50 Watts

D: 25 Watts

E: 20 Watts

A: 400 Watts

B: 100 Watts

C: 50 Watts

D: 25 Watts

E: 20 Watts

In the p-p chain, shown in the above diagram, what particles must be input in order to produce one 4He nucleus?

A: 8 protons, but 2 of them are returned when the 4He is produced

B: 6 protons, but 2 of them are returned when the 4He is produced

C: 2 photons and 2 positrons

D: 2 protons and 4 neutrons

E: 4 neutrons

A: 8 protons, but 2 of them are returned when the 4He is produced

B: 6 protons, but 2 of them are returned when the 4He is produced

C: 2 photons and 2 positrons

D: 2 protons and 4 neutrons

E: 4 neutrons

In what box does the galaxy in the bottom center belong in this Hubble tuning fork diagram?

A: E1

B: Irr

C: Sc

D: SBb

E: SBc

A: E1

B: Irr

C: Sc

D: SBb

E: SBc

In the figure above, how would you calculate the fraction of the mass of the gas in the universe that is in the form of Helium?

A: take 4x4 for the mass of Helium and divide by 4x4+48x1 for the total mass

B: take 4x1 for the mass of Helium and divide by 48x1 for mass of Hydrogen

C: take 4 for the mass of Helium an divide by 48 for the mass of Hydrogen

D: take 48x1 for the mass of Hydrogen and divide by 4x4+48x1 for total mass

E: take 48x4 for the mass of Hydrogen and divide by 4x1 + 48x4 for total mass

A: take 4x4 for the mass of Helium and divide by 4x4+48x1 for the total mass

B: take 4x1 for the mass of Helium and divide by 48x1 for mass of Hydrogen

C: take 4 for the mass of Helium an divide by 48 for the mass of Hydrogen

D: take 48x1 for the mass of Hydrogen and divide by 4x4+48x1 for total mass

E: take 48x4 for the mass of Hydrogen and divide by 4x1 + 48x4 for total mass

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