What is external forced convection? How does it differ from internal forced convection? Can a heat transfer system involve both internal and external convection at the same time? Give an example.

Q: Suppose you have a 0.45 kg package of frozen vegetables at 0°C. -How much heat, in kilocalories,…

A: mass (m) = 0.45 kg Initial temperature (T) = 0oC Heat of fusion (Lf) = 79.8 kCalkg

Q: What is vulnerabilty of security guards during heat waves? What problem they might face during heat…

A: Heat is just energy in transit. Flow of energy thermal is heat. It increases temperature. It flows…

Q: What is the relationship between incoming and outgoing radiation and the timing of minimum and…

A: Incoming Radiation The Earth's climate system is driven by the Sun's incoming ultraviolet, visible,…

Q: What mode of heat exchange is involved in “wind chill,” when moving air feels colder than still air…

A: The mode of heat exchange involved in "wind chill " is heat loss through…

Q: Explain some phenomena that involve conductive, convective, and radiative heat transfer?

A: In case of conduction and convection, the heat is transferred via material medium. Heat transferred…

Q: Consider laminar forced convection in a circular tube. Will the heat flux be higher near the inlet…

A: In general, the heat transfer coefficient and wall shear stresses are higher at the region where the…

Q: Give another application of thermal expansion that is very useful in our daily lives, or in your…

A: Thermal Expansion: This is defined as the expansion and contraction that occurs due to the change in…

Q: What makes heat rise? Explain.

A:

Q: Explain how hail forms? You need to understand that the middle part of a cumulonimbus cloud, where…

A: The formation of hail takes place in strong thunderstorm clouds. It predominantly occurs in those…

Q: The Earth is not in thermal equilibrium with sun, Why?

A: The temperature of the sun and that of earth aren’t the same. Sun is at a very high temperature and…

Q: Define emissivity, Give some examples?

A: The expression for the emissivity is given by,

Q: Consider a 40,000 km steel pipe in the shape of a ring that fits snuggly all around the…

A: Consider the coefficient of linear expansion be α, the initial length be L, the change in length be…

Q: What is a thermal energy reservoir? Give some examples.

A: Thermal energy reservoirs are those reservoir of heat from where heat can be taken or given to them.…

Q: Does convection happen when you mix water and food coloring that are at the same temperature?

A:

Q: Why does the presence of the molecule change the Earth’s temperature? Create a sketch that…

A: Greenhouse effect is defined as a process in which the solar radiations that enter the earth's…

Q: What are the forms of the Heat transfer, give example on each form of heat transfer?

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

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

A:

Q: Why heat engines are intentionally equated at high temperatures? If warm air rises, why is the…

A: 1. Heat engines are cyclic devices that extract heat from a high-temperature reservoir and convert…

Q: Consider laminar natural convection from a vertical hot-plate. Will the heat flux be higher at the…

A:

Q: How does specific heat affect the weather?  Give three examples of weather phenomena that are…

A: The weather in land region is hotter than in coastal regions due to low specific heat capacity of…

Q: What makes heat transfer by radiation different from conduction and convection?

A:

Q: What’s the Difference Between Conduction, Convection, and Radiation?

A: Heat/Energy can be transferred from one medium to another by three methods these are,  1.…

Q: What is a regenerative heat exchanger? How does a static type of regenerative heat exchanger differ…

A: A regenerative heat exchanger, or commonly a regenerator, is a type of heat exchanger.

Q: Consider the following physical cases. Choose the letter that correctly matches each roman numeral…

A: The correct answer is I Convection  II conduction. III Radiation   Here we are looking at the means…

Q: Explain why the 2-4 inch thick layer of blubber on a polar bear helps to keep polar bears warm…

A: Blubber is a thick layer of adipose tissue. Polar bears store extra digested food in the form of…

Q: Give 3 examples that show thermal expansion that happens in houses explain

A: Thermal expansion is the tendency of a substance to change it's physical dimensions resulting in a…

Q: QUESTION 2 If a hypothetical planet without an atmosphere had an atmosphere instantaneously added,…

A: Explanation: Thermal inertia: It can be defined as the property of a material that expresses the…

Q: What is the physical explanation of temperature? What type of energy is temperature? Explain.

A: Physical explanation of temperature: A collision between a molecule with high kinetic energy and one…

Q: You are cold, so you cover yourself in a blanket. A half hour later, you feel much warmer. Explain…

A:

Q: 19 Does our ability to survive on Earth’s surface depend on the greenhouse effect? Explain.

A: To explain the relationship of life on earth surface and greenhouse effect

Q: Give small explanation. Since conduction is when if heat gets into the house, it just easily…

A: Heat transferring process takes place by the three process, which is given below Conduction…

Q: What is thermal expansion?

A: when there is a variation in the temperature of the object, there is a chance for the expansion of…

Q: give 4 examples for convection and radiation and explain your answers

A: Given : Convection :                         Convection occurs when heat is transferred through a…

Q: Provide a single illustration of conduction, convection, and radiation. Be as specific as possible.

A:

Q: 5 Examples of situation or object that uses convection current

A: A convection current is a process in which the movement of energy from one place to another place.

Q: In what way does the glass act like a one-way valve for a conventional greenhouse? Does the…

A: The glass act like a one way valve. It means glass allows the shorter wavelength of heat to enter…

Q: Near a large body of water, the fluctuations in air temperature are usually less extreme than they…

A: Water has a very large specific heat constant. It takes long time to heat under sun or cool during…

Q: What is quality? Does it have any meaning in the superheated vapor region?

A: The ratio of the mass of the vapor to the total mass of the mixture is known as quality. It is also…

Q: What is limitation of Newton's cooling law?

A: The limitation s of the newtons cooling law are as follows:1. The difference of temperature between…

Q: Give examples of latent heat, fusion, evaporation, and condensation on a day to day basis.

A: Objective: To determine the examples of latent heat, fusion, evaporation, and condensation in the…