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Maximum kinetic energy

Find the maximum kinetic energy of the photoelectrons ejected from a sodium photoemitter for wavelength 2X10^-7m if the work function of sodium is 2.28eV.

Subject:

Physics

Topic:

Modern Physics

Posting ID:

12318

OTA ID:

103139

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Photons emitted and electomagnetic waves

How many photons are emitted each second by a 1000Watt source that emits electromagnetic waves at the wavelength of 0.05m?

Subject:

Physics

Topic:

Modern Physics

Posting ID:

12319

OTA ID:

102389

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Minimum uncertainty in a proton's velocity

Find the minimum uncertainty in a proton's velocity if this proton is confined in a box of length 5X10^-8m.

Subject:

Physics

Topic:

Modern Physics

Posting ID:

12320

OTA ID:

103139

View Details $1.99 Download Add to Cart

Human eye and photon energy

The human eye can detect as few as three photons of 5.5X10^-7m light arriving together. How much energy do these three photons collectively represent?

Subject:

Physics

Topic:

Modern Physics

Posting ID:

12321

OTA ID:

103877

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Work function in electon volts

When a clean zinc surface is irradiated with ultraviolet light, no photoelectrons are emitted from the surface unless the light has a wavelength less than 2.93X10^-7m. Find the work function of zinc in electron volts.

Subject:

Physics

Topic:

Modern Physics

Posting ID:

12323

OTA ID:

103139

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