Question

to what temperature must a black body be raised in order to double total radiation if original temperature is 527°
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Answer 1

Answer:

it is claimed by a racer bike manufacturing company that the race bikes are driven on a average of more than 12,000 kilometres on yearly basis .To the test the company's claim 100 randomly drawn racer bike owners are asked to maintain a record of total distance they travel. Will you favour this companys claim if the randomly selected sample exibit an average of 13,200 kilometres and a standard deviation of 3900 kilometres? Use P value to conclude your answervwith 5% level of significance

Explanation:

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Answer 2

RediantEnergy=σT

2

Energy=σ(1000)

4

E

2

=2E

1

Then

σT

2

4

=2×σ(1000)

4

T

2

=2

4

1

9

×1000T² =1189K.

Hope this'll help you.