Suppose that when a system is placed in thermal contact with a heat reservoir, which is at absolute temperature tr, it absorbs from the reservoir an amount of heat q. show that the increase in entropy of the system ∆s in this process obeys the inequality ∆s ≥ q/tr, the equals sign applying only if the system’s initial temperature differs infinitesimally from tr.

Thick and thin filaments

Ruth ford over turned thomsons model in 1911 with his well known gold foil experiment in which he demonstrated that the atom has a tiny heavy nucleus rutherford designed an experiment to use the alpha particles emitted by a radio active element as probes to the unseen world of atomic structure. hey hope this

The net force would equal 13 newtons , forward. the mass will accelerate. balanced forces: when forces are in balance, acceleration is zero. velocity is constant and there is no net or unbalanced force.hope this : )

A) the moment of inertia is given by i = mr^2 here m = 0.25 and r = 0.5. i = 0.25 * (0.5)^2 = 0.0625. b) i = 9.74 * 10^(37) and mass = 5.98 * 10^(24) so r^2 = i/m = 9.74 * 10^(37)/5.98 * 10^(24) = 1.628 * 10^(37 - 24) = 1.628 * 10^(13) r = √ 1.628 * 10^(13) = 4034848.200 c) since angular momentum is the product of moment of inertia and angular velocity, a = i * v; but i = mr^2 = 2 * 0.6^2 = 0.72 so a = 0.72 * 1.1 = 0.792. if she pulls her hand in 0.15 m. the new radius = 0.6 - 0.15 = 0.45. v = angular momentum/ radius = 0.792/ 0.45 = 1.76