The water beads up on synthetic fabric comparable to polyester but impasses to cotton because polyester is nonpolar while cotton is polar. In addition, nonpolar covalent bonds are a kind of chemical bond where two atoms portion a pair of electrons with each other while polar covalent bonding is a type of chemical bond where a pair of electrons is unevenly shared among two atoms.
Both process involve changes in energy and matter
Peer-review helps validate research ,establish a method by which it can be evaluated
Answer:
PVR is calculated by the formulae: 
Explanation:
Pulmonary vascular resistance may be defined as the resistance to blood through the pulmonary circulation.
PVR can be determined by the following formula:
Here, PAP is the pulmonary artery pressure, PAOP is pulmonary artery occlusion pressure and CO is cardiac output.
