15.49 should be the answer if that is 12 watt battery.
Focal distance of an ellipse is given by the formula

here a = length of semi major axis
e = eccentricity of the path
now here we know that
length of major axis for the path of planet is given as 32 units
so here we can say


so length of semi major axis is 16 units
focal distance for the planet path is given as 8 units
now from the above formula we can write




so eccentricity for the path of planet will be 0.5
Answer:
So, I tested it out and came to a conclusion.
The rubber ball is quite bouncy due to the fact that it is made of rubber which is what makes it bounce back and high, but although the golfball does in fact bounce back it does not bounce as high as the rubber ball due to the fact that it is made of plastic.
Explanation:
Hope this helps you out!
ANSWER

EXPLANATION
Parameters given:
Mass of the student, M = 70 kg
Mass of the textbook, m = 1 kg
Distance, r = 1 m
To find the gravitational force acting between the student and the textbook, apply the formula for gravitational force:

where G = gravitational constant
Therefore, the gravitational force acting between the student and the textbook is:

That is the answer.
Answer:
#1 = B, C, & D
#2 = A
#3 = C
#4 = C & A
#5 = C
Hope this helps! Have a good day :D!!
Explanation: