Answer:
No, the apparent weight will be different.
Explanation:
Although the mass is still the same, the apparent weight will be different. This is because of the centripetal acceleration caused by the Earth's rotation. At the poles, there is no centripetal acceleration. The closer you get to the equator, the larger the centripetal acceleration becomes, and the lower the apparent weight becomes.
Your options are:
A) It is located at a distance of 2.6 million light years from Earth.
B) It has to travel a distance of 2.6 million kilometers to reach Earth.
C) It can be photographed by a space telescope in 2.6 million years.
<span>D) It has to move at the rate of 2.6 million kilometers per hour to reach Earth
You need to remember the definition of lightyear: one lightyear is the distance that light can travel in one year through space. It is a measure of astronomical distances and it is equal to 9.5×10¹²km.
Therefore, if light takes 2.6 million years to reach Earth, it means that the Andromeda Galaxy is at a distance of 2.6 million lightyears from Earth.
Hence, the correct answer is A) </span><span>It is located at a distance of 2.6 million light years from Earth.</span>
Answer:
The efficiency of a Stirling engine is 74%
Explanation:
Given:
Temperature of gas when it is cold K
Temperature of gas when it is hot K
The efficiency of a stirling engine,
∴
Therefore, the efficiency of a Stirling engine is 74%