What is the frequency of a photon with an energy of 3.38 10-19 j?

Air flows upward in the wick of a lantern because of the liquid property called

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?