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The first law of thermodynamics is the law of conservation of energy. Energy cannot be created nor destroyed, but only changed in form.
For example when water turns a turbine in a hydroelectric power station. the loss in kinetic energy of the water is equivalent to the electric energy produced plus the waste heat, sound etc.
Let a system absorbs Q amount of heat energy from the external source. As a result of this, let W be the work done by the system on its surrounding and ΔU be the change in the internal energy of the system. According to the law of conservation of energy,
Q = ΔU + W
which is the mathematical statement of the first law of thermodynamics.
Thus, the first law of thermodynamics may be stated as:
The energy entering the system in the form of heat is equal to the sum of the increase in the internal energy of the system and the energy leaving the system in the form of work done by the system on its surroundings.
Wiki User
∙ 6y ago
Wiki User
∙ 9y agoheat engines(steam turbines and car engines)that generate electricity from heat are exaples of first law of therodynamics.
The first law of thermodynamics specifies that energy neither created or destroyed, also known as the conservation of energy. One example of this law is the change of kinetic energy of a moving car to heat energy. Another example is flipping on a light switch and melting ice cubes.
Wiki User
∙ 8y agoThe First Law states that energy is conserved, though it can change from one form to another. Take a comparison of light bulbs: incandescent, fluorescent, and LED. You can get configuration which will put out the same amount of light energy (luminescence), but the fluorescent and LED will use less electrical energy than the incandescent. Much of the energy from an incandescent bulb is in the form of heat energy (notice that the bulb will burn your fingers if you touch it). LED and fluorescent bulbs use different processes, which convert less energy to heat, and more to light, so those bulbs can provide the same amount of light for a fraction of the electrical power requirements.
Wiki User
∙ 12y agoA drop of ink in a glass of water. Drop it in. Count to three while the second law works its magic. Now take it out again.
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Which law of science was in effect immediately after the sixth day of creation?
First Law of Thermodynamics.The First Law of Thermodynamics (the total quantity of matter and energy is fixed or constant) was in effect immediately after the sixth day of Creation.
What did julius von mayer invent?
German physician and physicists Julius Von Mayer didn't "invent" anything. He actually was the first person to discover and write out the first law of conservation of energy, or first law of thermodynamics.
Why are theories and laws not absolute?
Because they may not apply in all situations.The first law of thermodynamics is true everywhere.The second law of thermodynamics isn't true inside the event horizon of a black holeThe third law of thermodynamics isn't a law but merely a point of reference to make measurements from.Newtonian laws of motion are not absolutely true but are only approximately true but valid for things that travel at less than 1/2 the speed of light.
Theory of evolution Vs Law of Thermo Dynamics?
The theory of evolution does not vs the law of thermodynamics. They are quite compatible since the earth is an open system.
What are other examples of Third LAw of Motion?
Newton's Third Law of Motion states that bodies simultaneously exert force on each other. Some examples of this law are standing, a bird flying, and a car moving down the road.
Which law of Thermodynamics states that energy cannot be created or destroyed?
That law is known as the Law of Conservation of Energy. It is also known as the First Law of Thermodynamics.
What law of thermodynamics states that energy is neither created or destroyed?
The First Law of Thermodynamics.
What law says that energy cannot be created or destroyed only changed?
It is called the First Law of Thermodynamics, sometimes also called The Law of conservation of energy.
What law of thermodynamics states that different forms of energy can be converted into one another?
That's related to the First Law of Thermodynamics - the Law of Conservation of Energy.
Of thermodynamics is a restatement of the law of conservation?
The 1st Law of thermodynamics is a restatement of the law of conservation of energy.
When the law of conversation of energy is applied to heat it is known as the law of thermodynamics?
Not exactly. The first law of thermodynamics, i.e. the law of conservation of energy, also accounts for heat as one of the many forms that energy can take. There is no one law called "the law of thermodynamics", but there are several "Laws of Thermodynamics" (note the plural form "LAWS").
Can energy be produced?
You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.You can't create energy out of nothing (First Law of Thermodynamics); this is an experimentally established fact (i.e., no exceptions are known). Nowadays, the law of conservation of energy (or First Law of Thermodynamics) is often derived from Noether's Theorem, but that is some advanced math.You can convert one type of energy to another, but see also the Second Law of Thermodynamics.
The first law of thermodynamics is related to the conservation of which quantity?
Yes. There are no known exceptions - otherwise it would not be considered a law
The fact that usable energy is always lost in an energy transfer is due to what 1 Newton's first law of motion 2 the second law of thermodynamics 3 Newton's second law of motion 4 the first l?
The second law of thermodynamics.
What is universal law of energy?
There is no commonly accepted law by that name, as far as I know. Two important laws about energy are the First Law of Thermodynamics and the Second Law of Thermodynamics.
Which law is Some energy is released as unusable heat energy into the environment?
The closest law is the Second Law of Thermodynamics. Note that not necessarily "most" energy will be converted to unusable heat, but it is almost inevitable that some will.
What is another name for the first law of Thermodynamics?
Law of inertia
