Select all that apply. The Big Bang Theory allows scientist to conclude that the universe . . .

1. was hotter and denser in the past

2. was cooler and less dense in the past

3. consisted mostly of carbon and oxygen in the past

4. consisted primarily of iron and nickel in the past

5. emerged from a tiny region and expanded

6. was only one star with eight orbiting planets

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?

The amount of potential energy possessed by an elevated object is equal to what?