Solar houses use a variety of energy storage devices to retain the heat absorbed during the day so that it can be released during the night.
Suppose that you were to use a device of this kind to produce steam at 100C during the day, and then allow the steam to cool to 0C and freeze during the night. How many kilograms of water would be needed to store 20.0 kWh of energy in this way? The latent heat of vaporization of water is 22.6 105 J/kg, the latent heat of fusion of water is 33.5 104 J/kg, and the specific heat capacity of water is 4186 J/kg K. A) 12.4 kg
B) 23.9 kg
C) 35.7 kg
D) 42.6 kg
E) 54.2 kg
Question 2
When current is flowing in an ordinary metal wire, the magnitude of the average velocity of the electrons is closest to
A) 10 m/s.
B) the speed of light.
C) 1 mm/s.
D) 1 km/s.
E) 1 m/s.
The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th
Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of
Measuring Temperature Using a Heat-Sensitive Wearable Thermometer
A typical aboveground oil storage tank.
Radiative forcing expresses change in energy input over time
Heat Loss by the Body