Efficiency =  Power Output / Power Input
Power Input = Rate of Energy input = 44.4 MJ/kg * 5 kg/h
 = 222 MJ/h
But 1 hour = 3600seconds
222 MJ/h = 222 MJ/3600s =  0.061667 MW              J/s = Watts
Power input = 0.061667 MW = 61 667 W
From  Efficiency =  Power Output / Power Input
   28% =  Power Output / 61667
   Power Output = 0.28 * 61667
   Power Output = 17266.76 W
 
  Power Output = 17 267 W
 Rate of heat Rejection = Power input - Power output
                                        = 61667 - 17267 = 44400 W
Rate of heat Rejection = 44 400 W.
C- Copyright.
        
             
        
        
        
Answer:
proteins
Explanation:
protiens is the most difficult nutrient to brek down
 
        
                    
             
        
        
        
Answer:
Electrical force, F = 90 N
Explanation:
It is given that,
Charge on sphere 1, 
Charge on sphere 2, 
Distance between two spheres, d = 6 cm = 0.06 m
Let F is the electrical force between them. It is given by the formula of electric force which is directly proportional to the product of charges and inversely proportional to the square of distance between them such that,


F = 90 N
So, the electrical force between them is 90 N. Hence, this is the required solution.
 
        
             
        
        
        
Finding acceleration= final speed-initial speed/time taken (or A=V-U\T)
Finial speed= 27.8s
Initial speed= 0s
Time taken= 5.15 
So..
27.8-0/5.15= 5.40m/s (rounded to two decimal places)
        
             
        
        
        
The type of current produced by a battery is direct current. C.