Answer:
Since the reading wasn't specified, it would be most likely A
Explanation:
A is the most similar to a protoplanetary disk, so it'd be A most likely
<span>gravitational force = 0.1 mg-wt. = 0.1 * 10^-6 * 9.8 N = Gm1m2/r^2
m1 = 40 kg m2 =15 kg and r = 0.2 m
Put in and find G</span>
Electromagnetic waves don't require medium to travel
Ex- light waves
B.
the first species that colonize new or undisturbed land
Explanation:
the moment of couple that is calculated by multiplying the size of one of the force by the perpendicular distance between two forces is torque of a couple