Answer:

Explanation:
Given

Required
Rewrite using scientific notation
The format of a number in scientific notation is

Where 
So the given parameter can be rewritten as

Express as a power of 10

Hence, the equivalent of the mass of the sun in scientific notation is:

 
        
             
        
        
        
During that period of time, the bird's displacement was 4 km east. So its velocity was (4km east)/(11hrs). That's 0.36 km/hour east. (rounded)
        
             
        
        
        
Answer:
The COP of the system is = 4.6
Explanation:
Given data
Higher pressure  = 1.8 M pa
Lower pressure = 0.12 M pa
Now we have to find out high & ow temperatures at these pressure limits.
Higher temperature corresponding to pressure 1.8 M pa 
 °c = 335.9 K
 °c = 335.9 K
Lower temperature corresponding to pressure 0.2 M pa 
 °c = 262.9 K
 °c = 262.9 K
COP of the system is given by


COP = 4.6 
Therefore the COP of the system is = 4.6