To maintain a balance the atmosphere must lose an equal amount of energy by emitting radiation, either into space or back toward the surface. What fraction is radiated back to the surface?

Q: Northeastern Canada and much of Europe receive about the same amount of sunlight per unit area. Why,…

A: The Gulf stream moves warm water from the Caribbean to Europe’s North Atlantic coast.

Q: Radiation is emitted(a) only by glowing objects such as the Sun.(b) only by objects whose…

A: radiation

Q: When you blow some air above a strip of paper, the paper rises. This is because

A: In the normal situation, the paper is in equilibrium because the downward thrust due to the air…

Q: than the Air over a warm surface can be heated by the process of This heated air rises because it is…

A: Air over a warm surface can be heated by the process of Convection. This heated air rises because it…

Q: On average, would Earth be warmer or cooler without the atmosphere? Explain your answer.

A: The water and the carbon dioxide molecules in the atmosphere absorb light ray and radiates back into…

Q: Consider a car radiator at 115°C in a 49°C environment and the exchange of heat between them by…

A: Temperature of the car,  Temperature of the environment,  Emissivity of the surface,  Surface area,…

Q: Consider two metal plates separated by air.  A temperature gradient separating the plates gives a…

A: Thermal energy transfer = kA t△θ /△x temperature gradient k△θ /△x = 24 j/ m2s A= 1X10-4 S…

Q: Why is whitewash sometimes applied to the glass of florists’ greenhouses in the summer?

A:

Q: A person with skin of surface area 1.85 m2 and temperature 30.0°C is resting in an insulated room…

A: Area = 1.85 m2 ambient temperature = 20+273= 293 K

Q: If a thermometer is allowed to come to equilibrium with the air, and a glass of water is not in…

A:

Q: A cube 21 cm on each side contains 3.2 g of helium at 20° C. 1300 J of heat are transferred to this…

A:

Q: If the amount of heat energy given to an iron rod is {53} calories, then its value in joules is.

A: The heat energy given to the iron rod is 53 cal. The energy in 1 cal is  41.184 J. The heat energy…

Q: Some environmentally conscious people build their homes in the shape of a dome. Why is less heat…

A: Some people build their homes in the shape of a dome.

Q: ......... is the flow of energy from warmer matter to cooler matter. Is it heat or conduction?

A: Conduction is a process of heat transfer in the solids. When two solid objects at different…

Q: Consider a car radiator at 110.5°C in a 53.5°C environment and the exchange of heat between them by…

A:

Q: Why is it difficult to make mercury enter a fine thermometer tube?

A: Since the cohesive forces between the molecules of mercury are very large as compared to adhesive…

Q: After filling your gas tank to the top and parking your car in direct hot sunlight, why does the…

A: The molecules are free and widely spreading an expanded gas. So, its density is less as compared to…

Q: Cite a primary difference between waves of solar radiation and waves of terrestial radiation?

A: Solar radiation is the radiant energy produced by the Sun from a nuclear reaction. Terrestrial…

Q: What two energies are involved in the interaction of radiant energy?

A:

Q: Discuss the role of high specific heat capacity of water with reference to climate in coastal areas.

A: Specific heat capacity is the amount of heat energy takes to raise or lower the temperature of one…

Q: Can an object be good absorber and a good reflector at the same time? Why, or why not?

A: A good absorber reflects very little light. Black is good absorber and white is a good reflector.

Q: Calculate the air temperature in degrees kelvin if the speed of sound is 357.3 m/s

A:

Q: In Convective Heat Transfer the greater the motion of the the greater the heat transfer, in general,…

A: Convective heat transfer takes place in fluids due to density difference .

Q: What happens to steam pressure and velocity in a converging nozzle?

A: A nozzle is a mechanical instrument/device which is used to control the motion of the fluid flowing…

Q: Why does a concert violinist must usually retune his instrument when he enters a warm room?

A: Given:  violin

Q: A house is losing heat at a rate of 1800 kJ/h per °C temperature difference between the indoor and…

A: a) The temperature in Degree Celsius is related to the Kelvin scale as,

Q: What is terrestrial radiation?

A: The terrestrial radiation is the electromagnetic radiation that is emitted by the surface of the…

Q: Suppose a thermometer is allowed to come to equilibrium with the air, and a glass of water is not in…

A: Thermometer is in equilibrium with air

Q: What does the high specific heat of water have to do with convection currents in the air at the…

A: Specific heat capacity is the amount of heat energy required to raise the temperature of unit amount…

Q: Cite a primary difference between waves of solar radiation and waves of terrestrial radiation.

A: Solar radiation is the radiant energy produced by the Sun from nuclear fusion. Terrestrial radiation…

Q: The heat from the Sun reaches and the Earth through empty space. This must mean the heat transfer…

A: