Due to thermal expansion, as temperature increases, density decreases.There is no simple relationship. Usually, but not always, if a substance is heated, it will expand, thus decreasing its density.
The process of changing one form of energy into another form of energy is called work (symbol: W). For example, when an electric motor changes electric energy into kinetic energy, it is doing work.Heat (symbol: Q) describes energy in transit (i.e. the flow of energy) from a warmer body to a cooler body.So, for example, when an electric kettle is switched on, electrical energy is converted into the internal energy of the water (and of the kettle itself) -in other words, work(W) is being done to the kettle. As the internal energy* of the water and the kettle increases, its temperature rises above the abient (surrounding) temperature, so energy is then lost from the kettle to its surroundings by heat(Q) transfer. So, the change in the water/kettle's internal energy is the difference between the work done on the kettle, and the heat transfer away from the kettle. To summarise:change in internal energy = W - QSo, we can say that a change in internal energy is the difference between work and heat. And this is the relationship between work and heat.(*'Internal energy' is the sum total of the various energies associated with the vibration of the molecules of any body. All bodies have internal energy. Lower internal energy is associated with lower temperatures, and higher internal energy is associated with higher temperatures.)
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In common emitter amplifier circuit, input and output voltage are out of phase. When input voltage is increased then ib is increased, ic also increases so voltage drop across Rc is increased. However, increase in voltage across RC is in opposite sense. So, the phase difference between the input and the output voltages is 180 degrees.
Although we use the term 'Phase angle' it's also an angle referred to another phasor (voltage or current).For example,conventionally when expressing power factor, we use 'voltage' as the reference. So the 'phase angle' of a particular phasor is the phase difference between our reference (voltage) & the phasor.As the gist, both mean the same except that 'phase angle' is the direction of the phasor w.r.t. positive x direction (reference)..AnswerBy definition, phase angle is the angle by which a load current leads or lags a supply voltage.Phase difference is the angle between any two electical quantities -for example, the angle two phase voltages of a three-phase system.
Increasing the temperature a solid material become a liquid and further a gas.
Phase changes, such as melting or freezing, are not associated with a change in temperature. Instead, the energy associated with phase changes is used to break or form intermolecular forces between molecules.
A heating curve shows the relationship between temperature and heat added to a substance. During phase changes, the temperature remains constant as the added heat is used to break intermolecular forces. Kinetic energy increases with temperature, so during phase changes, the added heat is used to increase potential energy (for breaking intermolecular forces) rather than increasing kinetic energy (temperature).
A phase diagram of the equilibrium relationship between temperature, pressure, and composition in any system.
Phase diagram?
Phase change is the process where a substance changes from one state to another, such as solid to liquid. During phase change, thermal energy is absorbed or released without a change in temperature, as the energy is used to break or form intermolecular bonds. Heat energy is the transfer of thermal energy between objects due to a temperature difference, and it can cause phase changes by providing the energy needed to overcome intermolecular forces.
The phase change of water graph shows the relationship between temperature and state of water. It includes the three main phases of water: solid (ice), liquid (water), and gas (steam). The graph illustrates how water transitions between these phases with changes in temperature and pressure.
Changes in both temperature and pressure induce phase changes in water (and all other materials!).
A phase diagram illustrates the relationship between the physical state (solid, liquid, gas) of a substance and its temperature and pressure. Different regions on the diagram correspond to different states of matter based on the prevailing conditions of temperature and pressure. The boundaries between the regions represent conditions where phase transitions occur.
It is a heating curve. It shows the temperature changes over time as a substance is heated continuously at a constant rate, highlighting phase changes and plateaus in temperature where energy is absorbed to overcome intermolecular forces.
Temperature does have an effect on water's phase. When the temperature of water is below 0 degrees Celsius, it freezes into ice. When the temperature is between 0 and 100 degrees Celsius, it remains in liquid form. Above 100 degrees Celsius, it vaporizes into steam.
Heat is a form of energy that is transferred between objects due to temperature differences. Phase changes are transitions between different states of matter, such as solid, liquid, and gas, which occur when heat is added or removed from a substance. These changes are governed by the energy exchange between molecules.