Recent content by planke

I think this problem should be really straightforward, but I am still having trouble understanding how to solve it.

Homework Statement At a coal-burning power plant a steam turbine is operated with a power output of 491 MW. The thermal efficiency of the power plant is 39.0%. (a) At what rate is heat discarded to the environment by this power plant? ______ GW (b) At what rate must heat be supplied to...

Homework Statement One day you notice that the outside temperature increased by 29° F between your early morning jog and your lunch at noon. What is the corresponding change in temperature in each of the following scales? _____C _____K Homework Equations Tc = (5/9)(Tf - 32) T...

Homework Statement The velocity of the Moon relative to the center of the Earth can be approximated by varrowbold(t) = v [−sin (ωt) xhatbold + cos (ωt) yhatbold], where v = 945 m/s and ω = 2.46 multiplied by 10−6 radians/s. (The time required for the Moon to complete one orbit is 29.5 days.)...

Homework Statement A passenger walks from one side of a ferry to the other as it approaches a dock. If the passenger's velocity is 1.90 m/s due north relative to the ferry, and 4.5 m/s at an angle of 33.0° west of north relative to the water, what are the direction and magnitude of the ferry's...