<span>Potential energy and Kinetic energy</span>
        
                    
             
        
        
        
Answer:
The change in length per unit length per degree rise in temperature of copper is 0.000017k
Explanation:
Given that :
The linear expansivity of copper is 0.000017k. This simply means that ; for a given copper length, the length of such copper will increase by 0.000017k for every degree rose in temperature of the copper rod.
Therefore, the change in length per unit length per degree rise in temperature (k) is 0.000017
 
        
             
        
        
        
Eventually wouldn't it collapse in on itself and create black hole.
        
             
        
        
        
Answer:
5.4 J.
Explanation:
Given,
mass of the object, m = 2 Kg
initial speed, u = 5 m/s
mass of another object,m' = 3 kg
initial speed of another orbit,u' = 2 m/s
KE lost after collusion = ?
Final velocity of the system
Using conservation of momentum
m u + m'u' = (m + m') V
2 x 5 + 3 x 2 = ( 2 + 3 )V
16 = 5 V
V = 3.2 m/s
Initial KE = 
               = 
               = 31 J
Final KE = 
Loss in KE = 31 J - 25.6 J = 5.4 J.
 
        
             
        
        
        
Answer:
1.45 K
I had the same question and i got it right.