Wave length.
If the cylinders are adjacent, you probably have a blown head gasket. If they AREN'T adjacent, it's probably a valve problem.
According to the sample exam for CQI (Certified Quality Inspector) the answer is discrimination.
The distance between two compressions or two rarefactions in a wave is half of the wavelength. This is because a compression and a rarefaction together make one complete cycle of the wave, which corresponds to one full wavelength.
If between two adjacent vertices then in 2-dimensions it is a side, in 3-d and edge. If between non-adjacent vertices, a diagonal.
Derived from the Pythagorean Theorem, the distance formula is used to find the distance between two points in the plane. The Pythagorean Theorem, a2+b2=c2 a 2 + b 2 = c 2 , is based on a right triangle where a and b are the lengths of the legs adjacent to the right angle, and c is the length of the hypotenuse.
If you have two adjacent cylinders that don't have compression, then there's a pretty good chance that the head gasket is blown between those two cylinders. A crack in the block or head between those two cylinders is also a possibility but it's much more likely to be caused by the head gasket.
Frequency: 20 waves per 2 seconds = 10 waves per second = 10 Hz.Wavelength: Double the distance between crest and adjacent trough = 3 meters.Speed: (frequency) x (wavelength) = 10 x 3 = 30 meters per second.
What is the distance between (4, -2) and (-1,6)?
What is the distance between (4, -2) and (-1,6)?
What is the distance between (4, -2) and (-1,6)?
You must know something else. Like an angle. Or coordinates of the vertices on an x-y plane. And, of course the length of a side. If you know an angle, then you know them all, adjacent angles are supplementary. use law of cosines to find the length of a diagonal. 1/2 of the diagonal is the distance to the opposite vertices. Use law of cosines with the adjacent angle to find the length of the 2nd diagonal. 1/2 of this 2nd diagonal is the distance from the center to the other two vertices.
It would vary between gas engines and how they were built, but most would fall between 8 1/2 to 1 and 11 to 1 compression ratio.