A 154 kg bear runs up a hill that has a slope of 15 degrees. The dude travels 1200 m in 125 seconds. A) How much work did the bear do on itself? B.) How much power did the bear develop?

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?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

What is the increase in density of a medium due to wave travel?