It is moving at a constant speed, not accelerating.
The maximum possible temperature increase of the copper is 
Explanation:
The energy gained by the mass of copper is equal to its change in gravitational potential energy, which is:
where
m = 2 kg is the mass of copper
is the acceleration of gravity
is the change in height of the copper
Substituting,
The energy gained by the copper is related to its change in temperature by
where
m = 2 kg is the mass
is the copper specific heat capacity
is the change in temperature
And solving for ,
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Aristotle's geocentric theory failed to match the expected predictions because a few celestial objects appear to have retrograde motion.
Answer: Option B
<u>Explanation:</u>
Aristotle’s theory states that all the bodies in universe rotate around the earth, and earth is located at the centre. But, the most serious challenge it was given was that, the difference found in the paths of revolution of mercury and Venus. They are revolving around the sun, and not the earth, periodically.
This is the significant drawback, and major factor for the Copernicus and the other models to be achieved. The mercury and Venus, closest planets to earth, and the sun too, are not following the earth’s path. And hence, upon studying clearly, all celestial bodies do not follow a path round the earth, but around a fireball, that is sun.
C nuclear reactions involving the fusion of atoms occur in the core of a stars
