Answer:

Explanation:
From the question we are told that
Temp of first bolts
Temp of 2nd bolt 
Generally the equation showing the relationship between  heat & temperature is given by
   
Generally heat released  by the iron bolt  = heat gained by the iron bolt
Generally solving mathematically
      
      
       
       
       
Therefore  is the final temperature inside the container
 is the final temperature inside the container
 
        
             
        
        
        
Answer:
I=0.0361 kg.m^2
Explanation:
Torque is the rotational equivalent of a force 
Torque= perpendicular distance r X Force F
Torque T = I(moment of inertia) X α (angular acceleration)
T= Iα
r= 0.0285m
F= 1.9 x 10^3
T=0.0285 x 1.9 x 10^3
T= 54.15Nm
I=T/α
I=54.15/150
I=0.361 kg.m^2
 
        
             
        
        
        
Answer:
A homopolar motor is a direct current electric motor with two magnetic poles, the conductors of which always cut unidirectional lines of magnetic flux by rotating a conductor around a fixed axis so that the conductor is at right angles to a static magnetic field.
Explanation: