Explain why air temperature readings are always takenwith the thermometer in the shade

Q: What type of a thermometer is recommended to measure accurately a temperature of 20K.

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Q: Why are thermometers that are used in weather stations shielded from the sunshine?

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Q: Convection heat transfer coefficient means the ability of particle to transfer heat in liquids or…

A: Answer Convection heat transfer is the rate of heat transfer between a solid surface and fluid per…

Q: Why is thermal pollution a relative term?

A: Thermal pollution is the thermal energy pumped into the atmosphere, water bodies, etc. by the…

Q: What do you think will happen if water is used in a thermometer instead of mercury?

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Q: At night, the surface of the earth cools, mostly by radiation. The surface radiates energy upward;…

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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: When there is morning frost on the grass in an open park, why is frost unlikely to be found on the…

A: The ground beneath the bench absorbs less solar radiation compared to the open ground. The ground…

Q: 4.7. For a pure buoyant plume, it can be shown that the vertical velocity and the buoyancy factor of…

A: Buoyancy force is a upward force.

Q: Can you explain why concrete feels hot in the summer while water in a pool feels cold

A: The heat capacity of a material is defined as the heat needed to raise the temperature by one…

Q: How do the thermal conductivity of gases and liquids vary with temperature?

A: Given:  thermal conductivity

Q: When a mercury thermometer is warmed , the mercury level momentarily goes down before it rises. Give…

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Q: Explain why cities situated by the ocean tend to have lessextreme temperatures than inland cities at…

A: The heat capacity of water is much higher than the heat capacity of soil.  This means that oceans…

Q: Explain why are the rooms often provided with double windows in cold countries?

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Q: When a mercury thermometer is warmed, the mercury level momentarily goes down before it rises. Can…

A: When heated not only does the mercury expand but so does its container which causes the inner…

Q: At 1:00PM, a thermometer reading 75°F is taken out where the temperature is 20 °F. The reading is 30…

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Q: What generally happens to the temperature of rising air and sinking air?

A: If the Air sinking down compresses air at the surface, raising temperatures near the ground. The…

Q: When you remove a cold beverage from a refrigerator in a humid room, water vapor will condense on…

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Q: Calculate and plot the increase of cumulative kinematic heat (cooling) during the night of 16 hours,…

A: The given values are,

Q: An unknown material bar having length of 2.7m has 1m² cross sectional area. One end is in contact…

A: Given length of bar = 2.7m Area of cross section, A = 1m2 Temperature difference ,ΔT = 373K-273K…

Q: Cooling is produced when a gas at high pressure suddenly expands. Explain.

A: When the gas at high pressure suddenly expands, the average distance between its molecules…

Q: How is heat transfer related to temperature?

A: Heat and temperature are related to each other but these are different quantities. Temperature is a…

Q: Name several properties of materials that could be usedto make a thermometer.

A: Several properties of the materials that could be used to make a thermometer are,

Q: A student calibrated their thermometer and obtained a reading or -2.0C in an ice water slush bath.…

A: Given: The calculated value of ice water=-2.0 oC=271 K. Required: error in the calculation.

Q: According to a weather forecast, Quezon City will have a temperature of 42 this coming weekend.…

A: GivenTemperature (T)= 42°C

Q: The below picture is an example of method of heat transfer. A hot alr balloon risng Into the sky the…

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Q: A solid plate, with a thickness of 15 cm and a thermal conductivity of 80 W/m∙K, is being cooled at…

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Q: What type of heat transfer helps the balloon rise?

A: To determine the mode of heat transfer that helps the balloon to rise.

Q: What happens to the temperature of a pan of water when evaporation exceeds the condensation?

A: Evaporation and condensation can take place simultaneously. Evaporation causes cooling. This is…

Q: Structural groaning noises are sometimes heard in the attic of old buildings on cold nights. Give an…

A: In the older house different types of materials are used to make the whole house. These different…

Q: Explain why a cold day a concrete floor feels colder to the bare foot done a mat on the same floor

A: Heat transfer between mat and concrete floor.

Q: When ice in a pond melts, what effect does this have on the temperature of the neraby air?

A: The nearby air temperature will decrease.

Q: The temperature which matters in the data-centers for keeping them cool, is known as  Wet-bulb…

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Q: Describe a situation in which heat transfer occurs?

A: Heat: It is the form of energy that takes from the hotter body to the cooler body. The flow of heat…

Q: The Celsius and Kelvin scales are useful because: A. they sound more official outside of tthe…

A: Celsius and kelving scale are useful because they are based off natural physical phenomena.

Q: Why is it important to protect water pipes in the winter so that they don’t freeze?

A: Given:  water pipes

Q: If the winds at the latitude of San Francisco and Washington, D.C., were from the east rather than…

A: If the winds were flowing from east rather than from west, the climate in San Francisco would be…