Which postulate of relativity was supported by the experiments of Michelson and Morley?

a. principle of relativity

b. constancy of the speed of light

c. principle of equivalence

d. no absolute frame of reference

How can a rocket be propelled forward in space where there is no air to push against?

Select the correct answer from the drop-down menu. A box contains shirts in two different colors and two different sizes. The numbers of shirts of each color and size are given in the table.

How does the amount of dark matter in clusters of galaxies compare to the amount of visible matter?

George determines the mass of his evaporating dish to be 3.375 g. He adds a solid sample to the evaporating dish, and the mass of them combined is 26.719 g. What must be the mass of his solid sample

Why was pluto recently reclassified as a dwarf planet? A. Pluto size had changed B. Scientists discovered the Pluto does no orbit the sun C. Scientists discovered other objects of a similar size in the solar system D.

What is likely to happen if a balloon that was blown up at a low altitude is brought to a high altitude? Why would this occur?

Elements have the same number of __as you move from left to right

What occurs when a liquid changes to a gas below its surface as well as on the surface? a. Sublimation b. Boiling c. Condensation d. Evaporation

Theory that many different realities are happening at once True or false

Which of the following is not shorthand to describe one of the three types of ecological relationships? +/+ -/+ +/0 -/0