CH 5 Quiz 10
POSSIBLE POINTS: 4
Problem Set 5C: A child and sled with a combined mass of 52.1 kg slide down a frictionless hill. Assuming that they
start at rest (v; = 0) and they are on Earth (g = 9.81m), calculate the initial height (hi) if their final speed (vf) is
12.3 m/s at the bottom of the hill (hj = 0).
The calculated answer is
Please do not include units and
round answer to ONE place after the decimal.

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.