Answer:
Explanation:
Now
Substituting the value of in the equation we get
the values here are used found in radians
So, at the value of .
Answer:
Explanation:
Ptolemy and Copernicus have presented different model in front of us.
As per Ptolemy, Earth is the center of the universe and all other planets and celestial bodies such as moon or Sun revolve around it. So as per his theory he would say that the celestial would rotate in west side due to which Sun would appear in eastern horizon.
But Copernicus theory is a contradiction of Ptolemy's work. As per him, Sun is the center of the universe and all other planets revolve around it. For the Sun rise event, he would have said the Earth rotates at east side and Sun appears.
A car traveling in a straight line at a constant speed has a constant velocity, but if the car turns around a curve in the road then the velocity changes, even if the speed stays the same. Or a car that is changing in speed, even if it continues in the same direction, has a changing velocity.
Answer:
Personally I think, that the answer is B.
Explanation: