Scientists observe a red shift when observing:

a.) galaxies that are moving closer together

b.) galaxies that are moving apart

c.) galaxies that are growing in size

d.) galaxies that are shrinking

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

Which atomic model was proposed as a result of j. j. thomson’s work?

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?