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Mass and energy
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Which physical quantity is conserved when a planet revolves around the sun?
moment of inertia is conserved.
Are reversible changes and physical changes the same?
Reversible changes and physical changes are not exactly the same. Reversible changes can be undone and the original substance can be recovered, while physical changes alter the appearance or state of a substance without changing its chemical composition. Physical changes are usually reversible, but not all reversible changes are physical changes.
Is momentum conserved in a perfectly inelastic collision?
In any physical process, momentum will always be conserved. Momentum is given by p = m*v. There is also something called law of conservation of momentum.
Which physical quantity is conserved of an earth satellite?
Velocity of satellite and hence its linear momentum changes continuously due to the change in the direction of motion in a circular orbit. However, angular momentum is conserved as no external torque acts on the satellite.
Can energy be taken during a physical change?
No, energy cannot be taken during a physical change. Energy is always conserved, meaning it cannot be created or destroyed, only transferred or transformed from one form to another. During physical changes, such as melting or boiling, energy is absorbed or released, but the total amount of energy in the system remains the same.
Is mass conserved in both physical and chemical change?
neither physical or changes its property
When is angular momentum conserved in a physical system?
Angular momentum is conserved in a physical system when there are no external torques acting on the system.
What are the two physical quantities that are not conserved?
Entropy and work (by non-conservative force ) are not conserved
Which physical quantity is conserved when a planet revolves around the sun?
moment of inertia is conserved.
When is energy not conserved in a physical system?
Energy is not conserved in a physical system when external forces, such as friction or air resistance, are present and cause energy to be lost as heat or sound.
How mass conserved during chemical and physical changes?
the of conservation of energy states that energy neither is created or destroyed it changes states the of conservation of mass states that mass neither is created or destroyed it only changes state
When metamorphic rock melts and turns into lava is matter conserved?
Yes, this is a simple physical change and matter is always conserved in these. In fact, matter is always conserved except in nuclear reactions where the sum of matter and energy is conserved.
What is a conserved quantity?
A conserved quantity is a physical property of a system that remains constant over time, even as the system undergoes changes. Examples include energy, momentum, and angular momentum. The conservation of these quantities is a fundamental principle in physics and often allows us to make predictions about the behavior of a system.
What evidence is there that energy is conserved in physical systems?
One key piece of evidence that energy is conserved in physical systems is the law of conservation of energy, which states that energy cannot be created or destroyed, only transferred or transformed. This principle has been consistently observed and tested in various experiments and real-world applications, providing strong support for the idea that energy is conserved in all physical processes.
How do you conserve physical resources?
The best way to conserve physical resources is to not use them. The less that is drawn from the Earth the more that can be conserved.
Are state changes chemical or physical changes?
Physical Changes
When matter changes state what two things are always conserved?
When matter changes state, the amount of mass and the amount of energy are always conserved. This means that the total mass and energy of the system remain constant throughout the phase change.
