Helium fusion results in the production of A) iron. B) ...

[PhilipSeeMore]

Helium fusion results in the production of
 
  A) iron. B) nitrogen. C) carbon. D) oxygen. E) hydrogen.

Question 2

Using equations: The force due to gravity between two objects can be described using the equation .
 
  How would one use Newton's second law to setup an equation one could use to find the gravitational acceleration experienced by an isolated astronaut 10,000 km from the Earth's center?

[Gabe]

Answer to Question 1

C

Answer to Question 2

Should include some variation on the following:
(a) recognize that Newton's second law describes the relation between the net force acting on an object, the object's mass, and its acceleration (i.e., Force = mass  acceleration).
(b) equate the two expressions (mass  acceleration = G M1 M2 / d2).
(c) identify which object each variable relates to (Mass of astronaut  acceleration of astronaut = G  Mass of Earth  Mass of astronaut / distance2)
(d) solve the equation for the acceleration of the astronaut (acceleration of astronaut = G  Mass of Earth / distance2)

[PhilipSeeMore]

Thanks for the timely response, appreciate it

[ricroger]

Wow, this really help