Answer:
190.3759 pounds
Explanation:
If the astronaut weighs 210 pounds when he is at a distance of 3978 miles from the Earth's center, then he will weigh
210 [3978 / (3978 + 200) ]² = 190.3759 pounds
at an altitude of 200 km.
<span>The motion of the medium is parallel to a longitudinal wave
and perpendicular to a transverse wave.</span>
When water vaporizes into the air, it becomes humid out.
Answer:
B) 4/5
Explanation:
The magnitude of the electric force between the two spheres is given by
where
k is the Coulombs' constant
q1 and q2 are the charges on the two spheres
r is the distance between the two spheres
Initially, we have
So the force is
Later, the two spheres are brought together so they are in contact: this means that the total charge will redistribute equally on the two spheres (because they are identical).
The total charge is
So each sphere will have a charge of
So, the new force will be
And so the ratio of the two forces is