The radiation emission is closely connected with their visible color. In ascending order, the hottest are blue, yellow and red planets. The Stefan-Boltzmann's Law says that the radiation emitted by a hot body is given by:
Where "A" is the area. Considering the planet as a sphere, we have to its area is givin by:
So we have that radiation is proportional to the radius of the planet. If the radius increases, the volume will increase. If a planet is larger, we can deduce that it has more mass.
Therefore, the more radiation the planet emit, it will be hotter, soon have more mass.
If you notice any mistake in my english, please let me know, because i am not native.
Answer:
825m
Explanation:
u=20m/s
a=0.5m/(s)^2
s = ut + 1/2a(t)^2
s = 20(30) + 1/2(0.5)(30)^2
s = 600 + 225
s = 825m
Work = force x distance. In units, Joules = Newtons x meters.
So: Work = 50 Newtons x 3 meters
Work = 150 joules. Answer D is correct
FYI - to ace physics, you should learn to identify these values using their fundamental units:
Force = Newtons = Kg·m/s²
Work = joules = kg·m²/s²
Power = watts = kg·m²/s³
In high school physics, If you learn to arrange equations so the units work out properly for the answer, you'll get most problems correct.
Well the difference between velocity and speed would be that velocity is basically speed with a direction with a vector assisting with it... and Speed would be distance traveled... I hoped that this helped. :)<span />
False, sharks and remoras have a symbiotic relationship. The remora removes parasites from the sharks scales, and the shark provides protection for the remora