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Does a substance that cools off quickly have a high or low specific heat capacity?
Specific heat capacity is the amount of energy required to increase the temperature of an object or substance by 1oK. The rate at which something cools is proportional to the difference in temperature between the object and its surroundings. Consequently, neither has any relation to the other.
Why is heat energy a low grade energy and work a high grade energy?
Heat energy is considered low grade because it is diffuse and difficult to convert into useful work with high efficiency. Work, on the other hand, is considered high grade because it is organized and can be easily directed to perform specific tasks with minimal waste. This distinction is based on the Second Law of Thermodynamics, which states that energy tends to disperse and degrade over time.
How can heat transfer through matter?
Hot matter and cold matter differ by the kinetic energy the atoms/molecules have. Temperature (as measured on the absolute temperature scale) is proportional to the average kinetic energy of the particles in a material.Normally we classify movement of heat according to three processes, thermal conduction, radiative transfer and convection.Heat transfer by Convection occurs in a fluid because it moves and the heat energy contained in the fluid moves with it. This is very important in home insulation and the main reason we insulate walls with fibers to inhibit motion of the air. Radiative transfer of heat occurs when the hot object emits electromagnetic radiation (light) and that electromagnetic radiation carries its energy elsewhere. We can see light energy that came from the sun or even a light bulb, but there is much more energy at longer wavelengths in the infrared part of the spectrum that we can't see. Radiative energy travels through materials (like air) that are transparent, or nearly so, for the particular part of the spectrum carrying the heat. (The distribution of energy emitted as light changes with the temperature of the object doing the emitting which is why we say something is "white hot" meaning it is at a high temperature.)It is heat transfer through conduction that we observe when we say heat travels through a solid body. If one part of an object it hotter than another, the molecules in that part have more kinetic energy. If left undisturbed, heat energy in a hot spot gradually spreads out into the whole object through thermal conduction of heat. Thermal conduction is nothing more that the energetic particles having collisions with their less energetic neighbors and thereby passing on some energyto them. The process happens many millions of times a second between neighboring molecules so only small amounts of energy need transferred from a "hot" molecule to a cooler neighbor for the over all process of neighbor to neighbor transfer to effectively carry that energy from a hot spot to cool spots. Eventually, the temperature of an isolated object will become uniform through this process of intermolecular energy transfer which we recognize as thermal conduction.
Does a high specific heat allow water to heat slowly cool slowly or both?
A high specific heat for water means that it can absorb a lot of heat energy before its temperature increases significantly, so it heats slowly. Conversely, it also loses heat slowly because it releases a significant amount of energy to lower its temperature.
What cause low and high pressure?
Heat and cold air.
Heat energy travels from an object with a high what?
temperature to an object with a low temperature
Does heat energy travel from an object with a low or high thermal energy?
Heat energy travels from an object with high thermal energy to one with low thermal energy, as it seeks to reach thermal equilibrium. This transfer occurs through conduction, convection, or radiation until both objects reach the same temperature.
How do pebbles absorb heat?
As long as the pebble is colder than the incident heat, it will absorb energy. This is a fundamental concept in heat transfer - heat travels from a high energy regime to one of lower energy.
What causes heat or the transfer of energy from object to another?
High albedos
What is energy that is transferred to an object at a high temperature to an object at a low temperature?
Heat is the energy that is transferred from an object at a high temperature to an object at a low temperature. This transfer of heat occurs in order to reach thermal equilibrium, where both objects eventually have the same temperature.
What causes heat or the transfer of energy from one object to the another?
High albedos
Energy in heat transfer always goes from what objectto what object?
Energy in heat transfer always goes from the object with higher temperature to the object with lower temperature. Heat naturally flows from areas of high temperature to areas of low temperature until thermal equilibrium is reached.
Does an object that feels hot have a lot of random kinetic energy.?
Yes, an object that feels hot has high kinetic energy because its particles are moving rapidly and randomly, which we perceive as heat. Heat is the transfer of thermal energy due to the motion of particles.
The energy transferred from a hotter object to a cooler one?
The law says that energy can neither be created nor be destroyed. It can only be transferred from one form to another.... And energy always from higher potential to lower potential... Since hotter object is at high potential and cooler object at lower potential, the heat energy will flow from hotter to cooler object.
When does energy transfer from a cold object to a hot object?
Energy does not naturally transfer from a cold object to a hot object. Heat always flows from a hot object to a cold object in order to reach thermal equilibrium. This is described by the second law of thermodynamics.
What is the difference between heat and temperature between a sparkler and a hot bath?
Heat is the transfer of energy from one object to another due to a temperature difference, while temperature is a measure of the average kinetic energy of the particles in an object. A sparkler has high heat energy that is quickly released, resulting in a high temperature, while a hot bath has lower heat energy spread out over a larger volume, resulting in a lower temperature.
Is heat energy transferred from a warmer object to a cooler object?
No, heat ALWAYS travels from hot to cold. It is not actual heat moving, it is energy. The more energy something has, the warmer it feels. For example, when you touch a metal railing on a winter day, it feels cold. That is because your hand has more energy than the rail. The energy from your hand is traveling into the railing to equalize the energy (moving towards equilibrium. The loss of energy in your hand is what gives you the "cold" feeling. Heat/energy NEVER moves from cold to hot.
