Answer:
the sun is larger in mass and therefore gravitational pull.
Explanation:
Fun fact the moon has more gravitational force on the earth than the sun because its closer to the earth.
Answer:
B. Q
A. P
Explanation:
I assume the figure is the one included in my answer.
The pivot (also called the fulcrum) is point Q.
The effort needed to keep the bar balanced is force P.
Answer:

Explanation:
We can solve the problem by using Snell's law:

where
n1 = 1.33 is the index of refraction of the first medium (water)
n2 = 1.00 is the index of refraction of the second medium (air)
is the angle of incidence of the wave in water
is the angle of refraction of the wave in air
Solving for the angle of refraction,

I am almost positive that it was, ISSAC NEWTON
The correct statement about nuclear fusion is the last one: "it produces nearly all the elements that are heavier than helium". Nuclear fusion is the process of combination of two smaller atoms into a larger one. It requires a high activation energy, which is reached in the stars. Elements from He to Iron were formed in the Sun, but larger elements require a higher energy and are formed inside supernovas.