Answer:
Explanation:
Gravitational Potential Energy at earth surface 
Gravitational Potential Energy at height h is 
Energy required to lift the satellite 

Now Energy required to orbit around the earth 



 (given)
  (given)




(b)For greater height  is greater than
  is greater than 
thus energy to lift the satellite is more than orbiting around earth
 
        
             
        
        
        
Answer:
in 1 second 3m, in 2 seconds 6m, in 3 seconds 9m. 
Explanation:
distance=speed × time
 
        
                    
             
        
        
        
Answer:
a). 53.75 N and 101.92 N
b). 381.44 N and 723.25 N
Explanation:

a).
ρ ,
,  ,
, 

 
 
 
 
b).
ρ ,
,  ,
, 

 
 
 
 
 
        
             
        
        
        
Answer:
e) True  Yes both are constant
Explanation:
Let us propose the solution of the problem before reviewing the statements, we use Newton's second law
        F - fr = m a
       N- W = 0
       N = mg
The equation for the force of friction is
      fr = μ N
      F - μ mg = m a
      F = m (a- μ g)
Now let's review the claims
.a) False. Normal force and friction are constants.
.b) False. Both are constant.
.c) False. Both are constant.
d.) False
e) True  Yes both are constant
 
        
             
        
        
        
Answer:
variations in great horned owl body size due to food supply can be acted on by natural selection. 
Explanation:
Natural selection can help select great horned owl with smaller body size since it's an advantage in a place with smaller available food sources, compared to a bigger body size that will need more food. At first, birds with smaller body survive while those bigger ones die out, and the smaller birds pass on this genes to their offspring.
Answer:
variation in body size due to inherited traits can be acted on by natural selection
Explanation :
Variations in body size in body size due to inherited trait can be acted upon by natural selection by favoring the size that is best suited for the survival of the species. Those with these genes survive and pass it on to their offspring, while those with the unfavorable body size are wiped out.