Answer:
0.00903 rad
0.00926 rad
6.268\times 10^{-6}
Explanation:
s = Diameter of the object
r = Distance between the Earth and the object
Angle subtended is given by

For the Moon

The angle subtended by the Moon is 0.00903 rad
For the Sun

The angle subtended by the Sun is 0.00926 rad
Area ratio is given by

The area ratio is 
 
        
             
        
        
        
Answer: Ribosomes are the site of protein synthesis, and they convert the coded information in messenger RNA into an actual protein molecule. 
I hope this helped! OvO
 
        
                    
             
        
        
        
Answer:
I) 420000J
ii) 
Explanation:
(I) so you can use the formula for quantity of heat then substitute the values given 
formula-Q=mc∆9
 
        
             
        
        
        
intensity of a star is inversely depends on the square of the distance from the star
we can say it is given as

here we know that

also we know that

now we will have



so other star is at distance 60 Light years