Answer: Technician A
Reason: Piston and rod are connected with crank shaft and connecting rod. Smaller end of connecting rod is connected with piston and bigger end is connected with crankshaft.
<u>Explanation:
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When removing the piston and rod assemblies from a cylinder block: The technician with correct approach. So to remove piston from cylinder technician must throw crankshaft first and the remove connecting rod by losing nuts and caps...So technician A is in right way. Technician B using hammer to remove piston from the rod not possible because connecting rod and piston connected by nuts and caps can’t be separate by hammer.
Technician A positions the throw of the crankshaft at the top of its stroke and removes the connecting rod nuts and cap.
Technician B covers the rod bolts with hammers and pushes the piston and rod assembly out with the wooden hammer handle or wooden drift and supports the piston as it comes out of the cylinder.
Answer:
The critical radius is -1.30 nm
Explanation:
Temperature for homogenous nucleation of copper, 
Melting point of copper, 
Latent heat of fusion, 
Surface free energy, 
Critical radius, r = ?
The formula for the critical radius is given by:



The critical radius is -1.30 nm
Answer: its an Ignition coil
Answer:
NIST ( National institute of standards and technology) :
This is the agency which work the under of United state (U.S.) department of commerce.The main purpose of this agency is to increase the industrial competitiveness and innovation by advancing technology ,measurement science and standards.This agency established in 1901 .In the NIST e lots of laboratory are available for research.