Which of the following statements is true?
1.since the sun uses its own hydrogen to create energy, it will eventually run out of fuel and burn out.
2.objects in the universe are moving toward earth, which supports the theory that the universe is shrinking.
3.the absolute magnitude of a star measure both luminosity and the stars distance from earth.
4. all the inner planets are less than one au from the sun.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?

Ways that industry and agriculture use physical properties to separate substances