Will give brainliest! Use the diagram to answer the question.
Which piece of spectral data is necessary to determine the spectral class of a star?

a. absolute magnitude

b. apparent magnitude

c. temperature

d. luminosity

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.