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alik
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What is the difference between formulas E=p^2/2m and E= hf ?
The formula E=p^2/2m is used to calculate the energy of an object in terms of its momentum and mass, while the formula E=hf is used to calculate the energy of a photon in terms of its frequency. Essentially, the first formula is used for objects with mass, while the second formula is used for particles without mass, such as photons.
Both formulas are commonly used in physics, but their applications are different. The formula E=p^2/2m is commonly used in classical mechanics, while E=hf is used in quantum mechanics.
These formulas are related to each other through the constant h, which is known as Planck's constant. This constant relates the energy of a photon to its frequency, and it also relates the momentum of an object to its wavelength.
No, these formulas cannot be used interchangeably. They have different applications and are based on different physical principles. Using the wrong formula for a specific scenario can lead to incorrect results.
Yes, there are limitations to these formulas. The formula E=p^2/2m is only applicable to objects with mass and does not take into account the effects of relativity. The formula E=hf is also limited in its application, as it does not take into account the wave-particle duality of light and other quantum effects.