Asledge loaded with bricks has a total mass of 18.3 kg and is pulled at constant speed by a rope inclined at 19.8° above the horizontal. the sledge moves a distance of 19.7 m on a horizontal surface. the coefficient of kinetic friction between the sledge and surface is 0.500.

(a) what is the tension in the rope?
(b) how much work is done by the rope on the sledge?
(c) what is the mechanical energy lost due to friction?

Which property of fossils allow scientists to determine the relative rock ages..

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)

Time remainin52: 42the chart shows data for a moving object.which conclusion is best supported by the information inthe chart? time (s)velocity (m/s