(5)The average kinetic energy is the same for all gases at a given temperature, regardless of the identity of the gas and is proportional to the temperature of the gas. Answer and Explanation: The kinetic energy
Temperature is a measure of the average kinetic energy of a set of molecules, like a beaker of water or a container of a gas. Adding heat raises this molecular kinetic energy, and hence the temperature, while reducing it lowers the temperature. What Is Calorimetry? Why is a joule equal t...
If He(g) has an average kinetic energy of 4470 J/mol under certain conditions, what is the root mean square speed of N_2(g) molecules under the same conditions? Why do we use the root-mean-square speed instead of the average velocity to describe a gas that follows...
which is defined as the mass of the gas per unit volume (m/V); d = m/V = P/RT. Isolating the mass of the gas being moved (m) and dividing by the time it takes to move it gives the following expression: m/t = d(V/t). In words, the mass flow...
As early as 3000 B.C., people used wind energy. It's hard sometimes to imagine air as a fluid. It just seems so ... invisible. But air is a fluid like any other except that its particles are in gas form instead of liquid. And when air moves quickly, in the form of wind, th...
The amount of energy used by the tires is proportional to the weight that is on them. Since a car is relatively light, this amount of energy is acceptable (you can buy low rolling-resistance tires for your car if you want to save a little gas). Since a train weighs thousands of times...
A nuclear power plant works pretty much like a conventional power plant, but it produces heat energy from atoms rather than by burning coal, oil, gas, or another fuel. The heat it produces is used to boil water to make steam, which drives one or more giant steam turbines connected to ...
and the power of the engine is increased. Supercharging adds anaverage of 46 percentmore horsepower and31 percentmoretorque. In high-altitude situations, where engine performance deteriorates because the air has low density and pressure, a supercharger delivers higher-pressure air to the engine so...
The hybrid car uses a much smaller engine, one that is sized closer to the average power requirement than to the peak power. Improving Fuel Economy in 5 Different Ways Besides a smaller, more efficient engine, today's hybrids use many other tricks to increasefuel efficiency. Some of those ...
(kilowatt-hours), which gets calculated on the basis of average operations conditions. According to the EPA (Environmental Protection Agency), each gallon of gasoline is equivalent to 33.7 kWh of electricity. There is also growing concern about the high amounts of energy that is needed to ...