0
Still curious? Ask our experts.
Chat with our AI personalities
Professor
Beau
EzraAdd your answer:
Earn +20 pts
Relationship between bulk modulus and poissons ratio?
K=E/(3*(1-2v)) K: Bulk modulus E: young modulus v: poison's ratio on the other hand: delta V/V=(1-2v)*delta L/L relative change in Volume equals to: (1-2v) * relative change in length.
What is the result of a 2 to 1 lecithin and sphingomyelin ratio?
The lecithin to sphingomyelin ratio of 2:1 or greater is characteristic of mature fetal lungs. Fetuses delivered prior to this gestational age are at increased risk of neonatal respiratory distress syndrome.
Why poisson's ratio cannot be greater than 0.5?
If you stretch an object, each side changes length by an amount due to strain,e, so the new length is L(1+e)..Each side normal to the stretch direction contracts by an amount equal to poisson ratio x the stretch. If you calculate the change in volume V you get dV = Ve(1-2u) Ay u = 0.5 there is no volume change (incompressible); if it were greater than 0.5 volume would decrease which is unlikely. If it is 0, there is no lateral contraction and volume increases. If less than 0 the object will actually expand laterally rather than contract, and some special materials do this. Poisson ratio can be as low as -1, but most common materials lie between 0 and 0.5
What do you mean by the term mechanical efficiency of an engine?
It is the ratio of indicated power to brake power.
Why auto transformer is lighter than conventional type?
because the copper is saved in the auto transformer that is the ratio of weights of copper in auto transformer to normal transformer is (1-(1/a)) where a is transformer ratio
