Suppose that star x and star y both have redshifts, but star x has a larger redshift than star y. what can you conclude?

Both clouds are the same size. Which one is lighter? 10,000 5,000

Suppose you dissolve 4.75 g of another solid (not urea) in 50.0 mL of water. You note that the temperature changes from 25.0 °C to 28.0 °C. Part 1: What is the mass of the solution?

Why does cold water sink?

A truck on the freeway accelerates from a velocity of 12m/s to a velocity of 28 m/s over a distance of 40.0 m. Calculate the acceleration of the truck

A song is playing on a radio. Which of the following best describes the transformation of energy? 1: Electrical energy is changed to sound energy 2: Electrical energy is changed to light energy 3: Sound is changed into electrical energy 4: Sound is

What often happens to light when it travels from one medium to another

60,000 is 100 time as much as

A balloon is expanded to the same volume as that of a human head. Do an order-of-magnitude estimate of the volume of this balloon in cm3.

Which of the following atoms do not usually form bonds

The red LED consists of a white LED covered with a red filter. What does the red filter do?