Answer:
Smallest collector size≈30
Explanation:
Daily sunlight intensity = 1400.
For a collector of 24% efficiency, the absorption per day per
= 0.24*1400 = 336.
For 8 hours, 25days of available sunlight, energy absorbed by collector per metre square , will be = 8* 25 *336 = 67200wh.
This is the amount of sunlight energy which will be trapped by 1. of collector in a month.
To find how many metre square of collector is required to get 2*kwh, we simply divide the required energy by the amount absorbed per square metre.
Smallest size of collected needed =
=29.76
≈30
Answer:
Black holes are detected as surrounding material (like gas) is funnelled by the force of gravity into a disk around the black hole. The gas molecules in the disk swirl around the black hole so fast that they heat up and emit X-rays. These X-rays can be detected from Earth.
Explanation:
Wavelength = 1/frequency thus wavelength =1/30000
Thermometer for the second part of question
Increased accessibility and accommodation for people with physical handicaps. Option D
<h3>What is sociology?</h3>
Sociology is the branch of science that deal with the study of the society and human dynamics. It also deals with dynamics of the human society. It also deals with social institutions.
Thus, the social reforms that Sociology has influenced in some way is increased accessibility and accommodation for people with physical handicaps.
Learn more about sociology:brainly.com/question/11098307
#SPJ1