Answer:
a. A
Explanation:
Kepler's First Law says that the orbits of planets are ellipses with the sun at one focus of the ellipse. Moreover, Kepler’s Second Law says that the line joining the planet to the sun sweeps out equal areas in equal times as it moves along its orbit. Finally, Kepler’s Third Law says that the ratio of the squares of the periods for two planets is equal to the ratio of the cubes of their semi-major axes.
By these laws, the comet A will have lower orbital speed.
Answer:

Explanation:
Given:
<u>the thermal resistance in the form of </u>


where:
are the thickness of the respective bricks
are the respective coefficient of conductivity
temperature inside the house, 
temperature outside the house, 
area of the wall, 
Since the bricks and insulation are used to construct a wall then they must be used in series for better shielding.
<u>Using Fourier's law:</u>


in series the resistances get add up



Answer:
The distance the car traveled during the given time is 94.44 m.
Explanation:
Given;
time of motion t = 8 seconds
initial velocity, u = 15 km/hr = 4.167 m/s
final velocity, v = 70 km/hr = 19.444 m/s
The distance traveled by the car during this time is given by;

Therefore, the distance the car traveled during the given time is 94.44 m.
Answer:
12 is temperature, and 13 is artic and Antarctic oceans
Explanation:
I'm sure about 13, not so sure about 12