Top of Form
* Three energy conversion processes take place in succession. The first has an efficiency of 51%, the second is 50% efficient, and the third 10%. What is the efficiency of the entire process? .0255 * Which of the following is true? Energy is created when a fuel is burned * Energy demand is a/an exponential function
* In the process of mining coal, the useful energy output is in the form of chemical energy. * The potential energy stored in the bonds that hold molecules together is called chemical energy. * In a light bulb, the non-useful, waste energy output is in the form of Thermal/heat energy. * What is the function of a generator in a power plant? Convert mechanical energy to electrical * In a car, the non-useful, waste energy output is in the form of thermal/heat energy. * In a light bulb, the useful energy output is in the form of radiation energy. * Work done is measured as the force against an object times the distance moved * Worldwide, we expect the use of which energy resource to decrease over the next 20 years? None * The quantity of an energy source that is known to exist and that can be economically recovered is called? Reserve * If the energy input of a system is 200 calories and its useful output is 36 calories, what is the efficiency of the system? .18 * What is doubling time? Time it takes initial quantity to increase by a factor of 2 * In a car, the useful energy output is in the form of mechanical energy. * A watt is a unit of? Power
* Which primary energy resource contributes the most to the production of electricity in the US? Coal * The useful output from a heat engine is 962 joules. The energy that is wasted is 4428 J? What is the efficiency of the engine? .1784 * Which sector of the US economy uses energy the least efficiently? Transportation * In the US, we rely less on energy from Wood than in earlier decades?...