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statuscvo [17]
3 years ago
12

What is the maximum kinetic energy k0 of the photoelectrons when light of wavelength 350 nm falls on the same surface?

Physics
1 answer:
Deffense [45]3 years ago
6 0
When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV.

What is the maximum kinetic energy Ko of the photoelectrons when light of wavelength 350 nm falls on the same surface?

Use h= 6.63×10-34 J * s for Planck's constant and c= 3.00×10^8 m/s for the speed of light and express your answer in electron volts.
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A 6- F capacitor is charged to 90 V and is then connected across a 700- resistor. What is the initial charge on the capacitor
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Answer:

540C.

Explanation:

A capacitor of capacitance C when charged to a voltage of V will have a charge Q given as follows;

Q = CV          ----------(i)

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A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.40 T is perpendicular to the loop. The field
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The magnitude of the induced emf is given by:

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ℰ = emf, Δφ = change in magnetic flux, Δt = elapsed time

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The area of the loop A is given by:

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Make a substitution:

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