The Doppler effect indicates that the universe is expanding because. Which phrase best completes the sentence.

Question 4 options:

light from other galaxies is the same color

light from other galaxies is the different color

light from other galaxies is blue shifted

light from other galaxies is red shifted

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates