Choose the BEST answer to the following: Newton’s law of cooling applies to objects that (a) cool. (b) warm up. (c) Both. (d) Neither.

Q: what is meant by optimal temperature ?

A: Optimum temperature: The temperature at which an enzyme shows its highest activity is called optimum…

Q: Which contains more heat, a coffee cup of boiling water or a bathtub with water at room temperature?

A: An average size bathtub contains 250 kg of water and an average size cup contains 0.25 kg of water.…

Q: Which of the following is NOT unit of heat? O calorie O Btu sanor O none of these Joules

A: The SI unit of energy is Joule.  The other units are calorie and Btu.  1 calorie = 4.18 J  1 Btu =…

Q: On a chilly 10°C day, your friend who loves cold weather says she wishes it were twice as cold.…

A: Here, 10°C in Kelvin = 10+273 = 283 K         -131.5°C in Kelvin = -131.5+273 = 141.5 K

Q: burning candle is carried away by (choose one) conduction, convection, or radiation

A: Most of the heat generated by a burning candle is carried by radiation.

Q: What mechanisms of heat loss are aided by convection?

A: Convection is the process of heat flow from one point to another point.

Q: What makes heat rise? Explain.

A:

Q: On the basis of kinetic theory, explain why evaporation causes cooling?

A: During evaporation, a liquid turns into a gas by absorbing heat from the surroundings. The molecules…

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

A:

Q: How much calories of heat are needed to convert 500 grams of water at 30°C to steam at 150°C?…

A:

Q: WHICH WAY OF HEAT RELEASE IS NOT EFFECTIVE AT LOW AIR MOBILITY 1. radiation 2. conduction 3.…

A: By analyzing each of the given options we will answer the question.

Q: What heats faster, land or water?

A:

Q: Adding the same amount of heat to two different objects does not necessarily produce the same…

A:

Q: What does that specific heat of a substance relate to its ability to change temperature?

A: As we know, the relationship between specific heat and temperature of a substance is given by the…

Q: Which of the following represents the heat transfer mechanism from Sun? convection radiation none of…

A: There are three process by which the heat transfers take place-convection, conduction and radiation.…

Q: How much heat was lost by the horseshoe in vaporizing 0.0100 kg of water

A: Given data: The initial temperature of water is: Ti=22∘C The mass of the water is: m=0.0100 kg The…

Q: In what forms is thermal insulation available?

A: Thermal insulation is the process of reducing heat from the surroundings. It can be done using many…

Q: Is it important to convert temperatures to the Kelvin scale when we use Newton’s law of cooling? Why…

A: The conversion between the scientific unit of temperature kelvin and degree Celsius is

Q: Is it important to convert temperature to the Kelvin scale when we use Newton's law of cooling? Why…

A: The Kelvin and Celsius both are scientific unit of temperature. The conversion between them is…

Q: Why does a two-story house that is roughly a cube suffer less heat loss than a rambling one-story…

A: For a given volume, a one-story house has less surface area than a two-story house. As we know rate…

Q: explain the terms convection and conduction?

A: both conduction and convection are mode of heat transfer.conduction is the process in which transfer…

Q: How does Zeroth law leads us to the concept of temperature?

A: The Zeroth law leads us to concept of the temperature as an indicator of the thermal equilibrium.

Q: What happens to the volume of air as it rises? What happens to its temperature?

A:

Q: Which temperature scale has no negative temperatures?

A: Temperature scales are used to measure degree of hotness or coldness of a body. There are different…

Q: Using principles of the thermodynamics, explain: Which is hotter, heaven or hell?

A: Actually we don't need thermodynamics to explain the hottness of heaven or hell.

Q: Name the method of heat transfer which doesnot depend on gravity.

A: In radiation, heat is transferred without any motion of the medium particles

Q: Explain thermal equilibrium?

A: If two objects are placed together and they do not exchange any heat means both are at the same…

Q: Which will undergo the greater rate of cooling- a red hot poker in warm oven or red hot poker in…

A: According to Newton’s law of cooling, rate of cooling is directly proportional to the temperature…

Q: what is the principle of convection and conduction in making squash soup?

A: Conduction Convection Energy is transferred with direct contact of two bodies or we can say that…

Q: Steaming cup of hot tea Is this Conduction, convection, or radiation

A: Conduction-when heat passes through solid in which heat passes from one point to another by…

Q: How are heat and temperature different?

A:

Q: Relationship between temperature scales?

A: Relationship between temperature scale. As the temperature is measured in difference in scales, such…

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

A:

Q: In what ways are Heat and Temperature different? How are they related?

A: Heat is a form of energy. Temperature is the physical quantity which gives the degree of hotness of…

Q: Does Newton's law of cooling apply to warming as well as cooling?

A: Newton’s law of cooling states that the rate of heat exchange between an object and its surroundings…

Q: What actually is thermal pollution?

A:

Q: What is thermal energy? Give some examples?

A: Thermal Energy :- The energy hold by a body due the motion of particles or molecules  within the…

Q: If you wish to warm 50 kg of water by 20°C for your bath, show that the amount of heat needed is…

A: