Two streams of water are mixed in an insulated container to form a third stream leaving the container. the first stream has a flow rate of 30 kg/s and a temperature of 90°c. the flow rate of the second stream is 200 kg/s, and its temperature is 50°c. what is the temperature of the third stream?

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.