Answer: Equilibrium temperature they reach is 383 K
Explanation:
As we know that,
.................(1)
where,
q = heat absorbed or released
= mass of gold = 1.3 kg
= mass of copper = 2.1 kg
= final temperature = ?
= temperature of gold= 300 K
= temperature of copper = 400 K
= specific heat of gold =
= specific heat of copper =
Now put all the given values in equation (1), we get
Thus equilibrium temperature they reach is 383 K
Answer: 383.22K
Explanation:
L = 3m, w = 1.5m
Area A = 3 x 1.5 = 4.5m2
Q' = 750W/m2 (heat from sun) ,
& = 0.87
Q = &Q' = 0. 87x750 = 652.5W/m2
E = QA = 652.5 x 4.5 = 2936.25W
T(sur) = 300K, T(panel) = ?
Using E = §€A(T^4(panel) - T^4(sur))
§ = Stefan constant = 5.7x10^-8
€ = emmisivity = 0.85
2936.25 = 5.7x10^-8 x 0.85 x 4.5 x (T^4(panel) - 300^4)
T(panel) = 383.22K
See image for further details.
Answer:
At the moment there are three astronauts working in the international space station.
Explanation:
The space station is as large as a U.S football field and is typically occupied by at least three astronauts and a maximum of six astronauts.
Answer:
As a member of the youth, I am given the opportunity to advance the mission of NSTP in my society, especially in this time of the pandemic. My civic duty to my society can be fulfilled through sincerely upholding the values of NSTP and applying its principles for the development of the society.
During this time of the pandemic, it is easy to be fearful and anxious that these make us forget to do our part. In my community we have had many activities to help those who are in need. To achieve the mission of NSTP, I will make sure that I will wholeheartedly participate in many of these activities.