What question could be asked to help determine whether the solar system is heliocentric or geocentric?
A) Why does the moon seem larger than the sun when it is further away?
B) Why can objects be seen orbiting other planets ( i. e. Jupiter’a moon)?
C) Why do some planets seem to change direction/move backward at times?
D) How do the stars/visible planets seem to move across the sky?

The most efficient way to establish the best possible economizer position is to measure

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Which of the following statements is true about planck’s law