An incline weighing 5 tons with its passengers travels uphill 2 km on a 30 degree slope. Find the potential energy it gains in kWh. A coal burning power plant converts 10,000 Btu heat to generate 1...

An incline weighing 5 tons with its passengers travels uphill 2 km on a 30 degree slope. Find the potential energy it gains in kWh.

A coal burning power plant converts 10,000 Btu heat to generate 1 kWh electricity. Given the efficiency of the generator 90%, determine the efficiency of the turbine.