(a) The amount of heat transferred is directly proportional to the temperature change. To double the temperature change of a mass m, you need to add twice the heat. ... (c) The amount of heat transferred depends on the substance and its phase.
Is there a proportional relationship between heat and temperature change?
The amount of heat transferred is proportional to the temperature difference between the objects and the heat capacity of the object . ... For a gas, the heat transfer is related to a change in temperature. The temperature, pressure, and volume of the gas
Why heat capacity is inversely proportional to temperature?
During change of state specific heat of the substance is infinity. Because S=mΔTQ and ΔT=0 during change of state. Specific heat of a substance is directly proportional to change of heat and inversely proportional to change of temperature is true .
(a) The amount of heat transferred is directly proportional to the temperature change . To double the temperature change of a mass m, you need to add twice the heat.
Is heat directly proportional to resistance?
This is exactly as you have stated, the heat is directly proportional to the resistance and the square of the current . Because the current term is squared in the power equation, the heat given off by the circuit is more highly dependent on the current flowing through it than the resistance.
Are temperature and mass directly proportional?
(b) The amount of heat transferred is also directly proportional to the mass . To cause an equivalent temperature change in a doubled mass, you need to add twice the heat.
How does heat affect temperature?
First, it changes the temperature of an object . If heat is transferred
Why does heat capacity increase with temperature?
As the substance heats up, the average kinetic energy of the molecules increases . The collisions impart enough energy to allow rotation to occur. Rotation then contributes to the internal energy and raises the specific heat.
What is the similarities of heat and temperature?
Both heat and temperature are the concepts of thermodynamics ; that works together to let the energy flow from hotter body to the cooler body. While heat depends on the number of particles in an object, temperature does not depend on a number of particles in an object because it is an average measurement.
Why is resistance directly proportional to heat?
This is exactly as you have stated, the heat is directly proportional to the resistance and the square of the current. Because the current term is squared in the power equation, the heat given off by the circuit is more highly dependent on the current flowing through it than the resistance.
Why the heat decreases even after increasing the resistance?
Explanation: Heat is directly proportional to resistance and to square of current . But if you increase resistance too much the current decrease, so heat decreases because in that case lowering in current is much more than in resistance .
Does higher resistance mean more heat?
A higher resistance produces more heat . The time, t for which current flows. The longer the time the larger the amount of heat produced. ... the higher the current the larger the amount of heat generated.
Why are temperature and volume directly proportional?
So, that means that volume is directly proportional to temperature. Even then, since we increase the temperature inside a material, the molecules' kinetic energy increases and they start to vibrate more and move around further from each other, therefore accounting for an increase in volume.
What is the relationship between density and temperature?
Density is directly proportional to pressure and indirectly proportional to temperature . As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases.
Does volume increase with temperature?
These examples of the effect of temperature on the volume of a given amount of a confined gas at constant pressure are true in general: The volume increases as the temperature increases , and decreases as the temperature decreases. ... If the temperature is in kelvin, volume and temperature are directly proportional.
What is the rule when it comes to hot and cold air?
In physics, the second law of thermodynamics says that heat flows naturally from an object at a higher temperature to an object at a lower temperature, and heat doesn't flow in the opposite direction of its own accord.
