It is true but that’s not Physics
        
             
        
        
        
Answer:
The ratio of their orbital speeds are 5:4.
Explanation:
Given that,
Mass of A = 5 m
Mass of B = 7 m 
Radius of A = 4 r
Radius of B = 7 r
The orbital speed of satellite A,
 ......(I)
......(I)
The orbital speed of satellite B,
 ......(I)
......(I)
We need to calculate the ratio of their orbital speeds
Using equation (I) and (II)

Put the value into the formula


Hence, The ratio of their orbital speeds are 5:4.
 
        
             
        
        
        
If we want the object to continue to move at constant speed, it means that the resultant of the forces acting on the object must be zero. So far, we have:
- force F1 with direction north, of 10 N
- force F2 with direction west, of 10 N
The third force must balance them, in order to have a net force of zero on the object.
The resultant of the two forces F1 and F2 is

with direction at 

 north-west. This means that F3 must be equal and opposite to this force: so, F3 must have magnitude 14.1 N and its direction should be 

 south-east.
 
        
        
        
Answer:
Total work done in expansion will be 
Explanation:
We have given pressure P = 2.10 atm 
We know that 1 atm 
So 2.10 atm 
Volume is increases from 3370 liter to 5.40 liter 
So initial volume 
And final volume 
So change in volume 
For isobaric process work done is equal to 
So total work done in expansion will be 