Answer:
.
Explanation:
Intensity 
of the electromagnetic radiation is given by
where 
is the distance from the EM source (the center of the sun, in our case), and 
is the power output of the sun and it has the value
Since the radius of the sun in meters is 
, the intensity of the electromagnetic radiation at the surface of the sun is
The intensity of the electromagnetic radiation at the surface of the sun is .
Because of the greenhouse gases inside the greenhouse, and the gases trap the heat from the sun so the plant don't freeze, hope this helps
Answer:
Explanation:
400 W = 400 J/s
300000 J / 400 J/s = 750 s or 12.5 minutes
<span>The difference between a internal combustion engine and a diesel engine is the ignition, But a Diesel engine is an internal combustion engine. The both burn internal one uses compression to fire the other uses ignition system.</span>
