Answer:
We choose PTFE
Explanation:
Attached are the modulus density and modulus strength chart.
Due to its young modulus, the density is near 0.5 GPa, as seen in the chart and support water gliding. The PTFE density is between 1 and 10 Mg / cubic meter (see module and chart of density), and the resistance is between 10 and 100 Mpa (see module and chart of strength). Therefore, the finest ploymer will be PTFE that meets the requirements.
Answer:1-D(intake) 2-B(compression) 3-A(ignition/power) 4-C(exhaust)
Explanation:
A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle.
The intake event is when the air-fuel mixture is introduced to fill the combustion chamber
The compression stroke is when the trapped air-fuel mixture is compressed inside the cylinder
The power stroke is an engine operation Stroke in which hot expanding gases force the piston head away from the cylinder head.
The exhaust stroke occurs whenspent gases are expelled from the combustion chamber and released to the atmosphere.
I’m in 6th grade I’m sorry