The radius of gyration of a spherical globule containing a single polymer and some solvent is 450 Å. Calculate the polymer density inside this globule if the molar mass of the polymer is M=2.6 x 10^6 g/mol.

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons have a velocity of 6.5 × 106 meters/second, what is the force acting on the electrons? the value of q = -1.6 × 10-19 coulombs.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging