Answer:
a)-True 
Hope this helps even tho theres no school right now 
 
 
        
             
        
        
        
Answer:
True because he is working his arms to lift and hold the weight
Explanation:
 
        
             
        
        
        
Answer:
wind vane if it can be used to show wind speed and the other is a
Explanation:
please mark 5 star if im right and brainly when ya can
 
        
             
        
        
        
Answer:
maximum allowable electrical power=4.51W/m
critical radius of the insulation=13mm
Explanation:
Hello!
To solve this heat transfer problem we must initially draw the wire and interpret the whole problem (see attached image)
Subsequently, consider the heat transfer equation from the internal part of the tube to the external air, taking into account the resistance by convection, and  conduction as shown in the attached image
to find the critical insulation radius we must divide the conductivity of the material by the external convective coefficient
