A particular spring has a spring constant of 25 N/m.
1 answer:
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Explanation:
Given that,
Average power of sun
We need to calculate the intensity of light at Earth's position
Using formula of intensity
Where, I = intensity
P = power
Put the value into the formula
So, The intensity is 1347.616 W/m².
(A). We need to calculate the pressure on a solar sail due to the light of the sun if it's fully reflective
Using formula for fully reflective
Put the value into the formula
(B). We need to calculate the pressure on a solar sail due to the light of the sun if it's fully reflective
Using formula for fully absorptive
Hence, This is the required solution.
Answer:
1) joule
2)
3)
Explanation:
1) Luminosity is the <u>amount of light emitted</u> (measured in Joule) by an object in a unit of<u> time</u> (measured in seconds). Hence in SI units luminosity is expressed as joules per second (), which is equal to Watts (
).
This amount of light emitted is also called radiated electromagnetic power, and when this is measured in relation with time, the result is also called radiant power emitted by a light-emitting object.
Therefore, if we want to calculate luminosity the Joule as a unit will be used.
2) Work is expressed as force
multiplied by the distane
:
Where force has units of and distance units of
.
If we input the units we will have:
This is 1Joule (
) in the SI system, which is also equal to
3) The formula to calculate the percent error is:
Where:
is the experimental value
is the accepted value
This is the percent error