Two planets orbit a star, as shown. If the planets are identical, which gravitational force is the strongest?
A)
The force between the two planets.
B) All three gravitational forces are equal.
C)
The force between the inner planet and the star.
D) The force between the outer planet and the star.

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

Which of the following is the best name for mgcl2

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=