I would say the correct answer is the third option. The area of the Earth that is most similar to the Sun's convection zone would be the mantle. The convection zone of the sun is its outermost layer where heat transfer by convection happens which is similar to the Earth's mantle.
The kinetic energy of an object is given by:

where
K is the kinetic energy
m is the mass of the object
v is its velocity.
The comet in our problem has a mass of

and a velocity of

, so its kinetic energy is:
ºC = K - 273
ºC = 600 - 273
T = 327ºC
Answer C
hope this helps!
The stiffness constant of the spring is 68,290.3 N/m
<h3>
Stiffness constant of the spring</h3>
Apply the principle of conservation of energy;
U = K.E
¹/₂kx² = ¹/₂mv²
kx² = mv²
k = mv²/x²
where;
- v is speed = 60 km/h = 16.67 m/s
- x is the distance
k = (1300 x 16.67²)/(2.3²)
k = 68,290.3 N/m
Thus, the stiffness constant of the spring is 68,290.3 N/m.
Learn more about stiffness constant here: brainly.com/question/1685393
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