Steel plates are commonly attached to each other with rivets, which are slipped into holes in the plates and rounded over with hammers. The hotness of the rivets makes them easier to round over, but their hotness has another important advantage in providing a tight fit. What is it?

Q: If you want to preserve the hotness of the coffee, while waiting for your date, should you add the…

A: If you want to preserve the hotness of the coffee, you should add the cream now or later by the…

Q: When a body gains heat, there is always a rise in its temperature.  True or False

A: According to first law of thermodynamics , ∆Q = ∆U + W  Here ∆Q = heat change  ∆U = internal energy…

Q: Two shirts are warmer than a single shirt of double thickness . Why?

A: Insulators are the material which is a bad conductor of heat. Air layers behave as a good insulator.

Q: Loose-fitting white clothing covering most of the body is ideal for desert dwellers, both in the hot…

A:

Q: Pieces of glass and copper are heated to the same temperature. Why does the piece of copper feel…

A: When pieces of glass and copper are heated to the same temperature , piece of copper feel hotter on…

Q: Does the temperature of a body depend on its size?

A: Answer : No  Temperature is an intensive property it does not depend on the size. Example : If you…

Q: Pieces of copper and glass are heated to a same temperature . Why does the piece of iron feel hotter…

A: Copper is a very good conductor of heat. So, it allows maximum amount of heat to pass through it…

Q: Why does water in a metal canteen stay cooler if the clothjacket surrounding the canteen is kept…

A: Metal can is cooler

Q: A typical thermos bottle has a thin vacuum space betweenthe shiny inner flask (which holds a liquid)…

A: Vacuum bottles

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

A: Given:  thermal conductivity

Q: Why should we wear cotton clothes in summer?

A: We sweat more in the summer session. Cotton is a strong water absorber helps to absorb the sweat and…

Q: aluminum has a higher specific heat capacity than iron this means that for equal masses of aluminium…

A: Answer:- Aluminum has a higher specific heat capacity than iron this means that for equal masses of…

Q: Why does an iron ball seem to have a lower temperature than a wooden ball despite having the same…

A: iron ball seem to have a lower temperature than a wooden ball despite having the same temperature

Q: You apply a flame to 2 L of water for a certain time and its temperature rises by 1°C. If you apply…

A: We know,  Q = m*c*Δt Mass can further be represented in terms of volume as - Density = mass/volume.…

Q: At what common temperature would a block of wood and a block of metal feel equally cold or equally…

A: for any object feel equal cold or equal hot when it is touched since the temperature of any object…

Q: What makes the tile floor so much cooler than the bathroom mat when I walk out of the shower?

A: The thermal conductivity of tiles is greater than that of the mat. It implies that heat can be…

Q: Suppose that you cut a small gap in a metal ring. If you were to heat the ring, would the gap become…

A: This question is from the Thermal Expansion section of Thermodynamics, As we know Thermal Expansion…

Q: A 1.8-cm-thick wood floor covers a 4.0 m × 5.5 m room. The subfloor on which the flooring sits is at…

A:

Q: A 15∘C, 2.0-cm-diameter aluminum bar just barely slips between two rigid steel walls 10 cm apart.…

A: The force exerted by the rod on each wall is calculated using following steps:Given:

Q: Why do you feel uncomfortably warm on a hot and humid day?

A: We feel uncomfortably warm on a humid day because as the humidity increases the rate of evaporation…

Q: An iron plate 2 cm thick has a cross-sectional area of 5000 cm2. One face is at 150oC, and the other…

A: we know that,Qt=KTA∆TLQ= heat transferedt= time = 1 skT= thermal conductivityA=cross sectional area=…

Q: An old remedy for a pair of nested drinking glasses that stick together is to run water at different…

A: When two thinking glasses are nested together, in order to separate them, cold water flows into the…

Q: An astronaut has two objects that are identical in all respects, except that one is painted black…

A: Which of the two objects painted black and silver cools down at a faster rate.

Q: How does perspiration give the body a means of cooling itself?

A: To determine: How the perspiration give the body a means of cooling itslef

Q: What examples of heat transfer by conduction, radiation, and convection do you encounter when using…

A: Heat transmission is a straightforward physical process. During the heat transmission process,…

Q: What is the necessary condition for thermal equilibrium?

A: The transfer of heat takes place from the higher temperature object to the lower temperature object.

Q: When I step out of the shower, what makes the tile floor so much colder than the bathroom mat?

A: Air is a better insulator. The tiles transfer heat more than the mat, which means that the floor…

Q: A spring is made of steel and not of copper. Why?

A: A good spring should have high restoring capacity and elasticity properties and both these…

Q: I have 1.2 kg of ice at 0oC. How much heat is required to convert this ice to 100oC steam? 3.6 ×…

A: Heat energy required to convert ice into steam is,

Q: What do fiberglass and snow have in common that make them good insulators?

A:

Q: What condition is necessary for two bodies that are in physical contact with each other to be in…

A: Two bodies are in physical contact to each other

Q: If two objects are in thermal equilibrium, that means they have the same

A: Thermal equilibrium is the state in which heat transfer between the two object is zero. The heat…

Q: Can two objects be in thermal equilibrium if they are not touching ?

A: Zeroth law of thermodynamics If two objects A and B are in thermal equilibrium with another object…

Q: On cold, clear nights horses will sleep under the cover of large trees. How does this help them keep…

A:

Q: You apply a flame to 1 L of water for a certain time and its temperature rises by 2°C. If you apply…

A: Q = m C dt  Q is the heat applied  m is the mass / quantity of the material C is the specific heat…

Q: In terms of heat flow, explain why silverware feels cold to touch?

A: Answer:-  Metal(silverware) feels cold because it conducts heat extremely well.  Since room…

Q: you are trying to keep your house warm in the winter. using the idea of conduction, convection, and…

A: Conduction is the transfer of energy from more energetic particles of a substance to adjacent less…

Q: Inside a room at a uniform comfortable temperature, metallic objects generally feel cooler to the…

A:

Q: A piece of wood lying in the Sun absorbs more heat than a piece of shiny metal. Yet the metal feels…

A: A piece of wood lying in the Sun absorbs more heat than a piece of shiny metal.

Q: You apply a flame to 2 L of water for a certain time and its temperature rises by 2°C. If you apply…

A: You apply a flame to 2 L of water for a certain time and its temperature rises by 2°C. If you apply…

Q: An iron nail becomes hot when it is hammered, Why?

A: Whenever there is an increase in temperature of an object, it is due to the increase in the object’s…

Q: How does a fan help us feel cooler in the summer?

A: Given fan help us feel cooler in the summer we have to find the cause of the above mentioned…