The type of pipe wrenches which are designed to turn and hold where marring is not objectionable is known as the chain wrench.<span> It has two serrated which adjust and grip the pipe. </span>
Answer:

Explanation:
As per first law of thermodynamics we know that
heat absorbed = change in internal energy + Work done
so we have


so work done is given as


now we know that at constant pressure the work done is given as




or we have

The answer should be (c) because the dog is the one which make a sound of ooooooo
Answer:
Explanation:
Given
Force applied 
Door is
wide
for gate to revolve Properly Pivot Point must be at center i.e. 1.5 from either end
Torque applied is
Maximum torque



Answer:
B, C, F
Explanation:
Conduction is heat transfer by means of molecular agitation within a material without any motion of the material as a whole. If one end of a metal rod is at a higher temperature, then energy will be transferred down the rod toward the colder end because the higher speed particles will collide with the slower ones with a net transfer of energy to the slower ones.
I would provide the source, but this is not allowed as it seems the website does not encourage learning of well-established materials.
Let me know if you require a further explanation