A liquid food product is being cooled from 80C to 30C in an indirect heat exchanger using cold water as a cooling medium. If the product mass fl ow rate is 1800 kg/h, determine the water fl ow rate required to accomplish product cooling if the water is allowed to increase from 10C to 20C in the heat exchanger. The specifi c heat of the product is 3.8 kJ/(kg K) and the value for water is 4.1 kJ/(kg K).

Heat from the sun reaches earth to a. radiation b. convection c. conduction

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

Positrons are spontaneously emitted from the nuclei of