Asked in Uncategorized
What is a zero energy state?
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Asked in Chemistry, Temperature
What is the diagram for freezing and freezing point?
Absolute zero is the theoretical lowest possible temperature. More formally, it is the theoretical temperature at which entropy reaches its minimum value. The laws of thermodynamics state that absolute zero cannot be reached using only thermodynamic means. A system at absolute zero still possesses quantum mechanical zero-point energy, the energy of its ground state. The kinetic energy of the ground state cannot be removed. However, in the classical interpretation, it is zero and the thermal energy of matter vanishes.
Asked in Chemistry
What happens to the energy in a substance when it changes state?
Asked in Energy
Why the potential energy is zero in free electron case?
Asked in Chemistry
Can a substance ever reach absolute zero?
What is the temperature at which the particles of a substance have no more kinetic energy?
If a system has zero kinetic energy does it necessarily have zero momentum?
Asked in Kinematics
What happens to the kinetic energy of particles at absolute zero?
What state of matter has the least kinetic energy?
The state of matter than has the least internal kinetic energy (the kinetic energy of all the internal particles relative to the center of mass of the system), or the least internal + macrosopic kinetic energy, is the same state as "Which state of matter has the least thermal energy?". (hint: it's not the gaseous state). However, if you are asking what state of matter has the least macroscopic kinetic energy: Every state of matter can have systems with zero macroscopic kinetic energy. So none of them (or perhaps all of them) have the "least" kinetic energy.
Asked in Physics, Energy, Kinematics
Can an object have no either potential energy and kinetic energy?
Asked in Kinematics
Can it have kinetic energy but no momentum?
Momentum = mass x velocity Kinetic Energy = 0.5 x mass x velocity2 If momentum equals zero, the only logical thing to assume is that the velocity equals zero. If the velocity equals zero for momentum, the velocity for your kinetic energy formula is also equal to zero. Anything multiplied by zero is zero, so kinetic energy would be zero if momentum is zero. So the answer is no.
Asked in Science, Energy, Nuclear Physics
When does the value of mass is 0?
Mass can only be zero when energy is also zero. Einstein's mass-equivalence equation e = mc2 supplies the relationship between mass and energy. Since c2 is constant, i.e. about 9 x 1018 (m/s)2, in order for mass to be zero, energy must also be zero. In the Standard Model, only the photon and the gluons are massless, that is, in their rest state.
Asked in Science, Physics, Energy, Quantum Mechanics
What is zero point energy?
Answer Zero-point energy (not to be confused with Vacuum Energy) is the lowest possible energy that a quantum mechanical physical system may have and is the energy of the ground state. This energy comes from the fact that after you remove all thermal and kinetic energy from an atom there is still quantum mechanical harmonic vibration that arises due to the Heisenberg Uncertainty Principle. This energy, so far, can not be taken away from a system.
Asked in Definitions
Which of the following is the best definition of a zero energy state?
Asked in Physics, Kinematics
What is the connection between absolute zero and potential and kinetic energy?
Asked in Physics
Is absolute zero the point at which a substance has minimal thermal energy?
Can a system of two or more objects have a total kinetic energy that is zero but a total momentum that is not zero?
No. If the total kinetic energy is zero, this undeniably means that the bodies are not moving. If they are not moving, the total momentum should be zero. According to me, if the total kinetic energy of a system of bodies is zero, the total momentum should also be zero. The reverse is true though: A system can have zero momentum (bodies of equal mass move in opposite directions) but a kinetic energy that is not zero.
Asked in Buildings
What is a net zero energy building?
Net Zero Energy means that a building balances its energy needs with energy produced from renewable, zero-emission sources. While Net Zero Energy buildings may seem cutting edge, they will become status quo faster than you think. GSA's Sustainable Facilities Tool goes into depth on legislation, programs, and case studies pertaining to Net Zero Energy.