(a) What is the so called cosmic reionization process? (b) What are Lyα lines and why did the researches want to observe them?
(c) What do the authors intend to point out with Figure 1 (see article)?
(d) How is confirmed that the peaks seen in Figure 3 are actually from Lyα emissions?
(e) How are the bubble sizes of the galaxies estimated?
(f) What is special about the findings in the article and what are the scientific implications?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

At the negative terminal of the battery the electron has electric potential energy. what happens to this energy as the electron jumps from the negative to the positive terminal?

Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n