What scientific observation did Edwin Hubble use to determine distances between galaxies? A As the light source passes Earth, the wavelength increases as the frequency increases,
B As the light source moves toward Earth, the wavelength decreases as the frequency increases,
C As the light source moves away from Earth, the wavelength increases as the frequency decreases.
D As the light source affects the gravity of Earth, the wavelength decreases as the frequency
decreases.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

The specific heat of ice is 0.5 calories/gram°c. 20 grams of ice will require ll calories to raise the temperature 1°c. 05