Some solar energy devices used in homes circulate air over a bed of rocks that absorb thermal energy from the sun. If a house uses a solar heating system that contains 2500 kg of sandstone rocks, what amount of energy is stored if the temperature of the rocks increases from 20.0 °C to 34.5 °C during the day?  Answer: 2.7×104 kJ   SHOW THE SOLUTION

How much heat energy must be removed from 0.10 kg of oxygen with a temperature of 22 °C in order for the oxygen to liquefy at -183 °C? (Co = 913 J/kg°C, Ly = 2.13 x 105 J/kg and oxygen liquefies as -183 °C) O 5 x 10^4 J O 9 x 10^4 J O 1 x 10^4 J O 4 x 10^4J

What is the ratio of the energy required to warm 125 g of Ice (0.0 \deg C) to body temperature (37 \deg C) to warming the same amount of water through the same temperature change? Answer format is the number Eice/Ewater = (2 significant figures) Latent Heat of Fusion of Water: 335, 000 J/kg Specific Heat Capacity of Water: 4186 J/kg/\deg C

The intensity of solar radiation above the earth’s atmosphere is about 1300 W/m2. The earth’s average surface temperature is relatively constant over geological time spans, so the energy the earth receives from the sun must be balanced by energy the earth reradiates in all directions into space. If the earth were to have a uniform temperature over its entire surface, what would the temperature be?

Note: Round off your answer up to 3 decimal places.  Input only the numerical value. Researchers are conducting a study to quantity the thermal conductivity of a composite material. A square box is made from 838 cm2 sheets of the composite insulating material that is 2.8 cm thick. A 201 W heater is placed inside the box. Sensors attached to the box show that the interior and exterior surfaces of one face have reached the constant temperatures of 81°C and 38°C. What is the thermal conductivity in W/m-K?

On a sunny day when the outside temperature is 34.0°C, a car parked in the sun is receiving 812 watts/m2 of incoming solar radiation (Insolation). Because the car radiates heat off of a greater surface area, the car in-turn radiates off heat at a rate of 169 watts/m². If the car is considered a perfect absorber and emitter of radiative energy, what will the equilibrium temperature inside the car be? °C

2.2 kg of ice (solid phase of water) at -10°C is heated under atmospheric pressure. Answer the following questions. Use the following values for your calculation. specific heat of ice: 2.1 kJ/(kg °C) specific heat of water: 4.2 kJ/(kg °C) specific heat of vapor: 2.0 kJ/(kg °C) latent heat of fusion: 334 kJ/kg latent heat of vaporization: 2260 kJ/kg How much heat is required to change the phase of the liquid water to vapor? How much heat is required to raise the temperature of vapor to 200°C?