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oee [108]
3 years ago
7

Ultraviolet light with a frequency of 3.00x10^15 Hz strikes a metal surface and ejects electrons that have a maximum kinetic ene

rgy of 6.1 eV. What is the work function (in eV) of the metal ? (h = 6.63x10^-34 J.s and 1 ev = 1.60x10^-19J)
Physics
1 answer:
oksian1 [2.3K]3 years ago
3 0

Answer:

Explanation:

Frequency of 3 x 10¹⁵ ,  wavelength = 3 x 10⁸/3 x 10¹⁵ = 10⁻⁷ m = 1000A.

Energy in eV = 12375/1000 = 12.375 eV.

Maximum kinetic energy of ejected electrons = 6.1 eV

Work function = 12.375 - 6.1 = 6.275 eV.

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not enough information is given to determine the velocity of the object at time to=0.00s

3 0
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Jasmine makes a note card about series circuits. she records the points shown. a 2 column table with 1 row. the column on the le
Bess [88]

Jasmine need to correct the error by switching the headings on the columns adding the title parallel circuits.

<h3>What is a parallel circuit?</h3>

A parallel circuit is a circuit in which the components are connected to a common junction. This implies that if one bulb goes out in a parallel connection, all the bulbs will go out.

As such, Jasmine need to correct the error by switching the headings on the columns adding the title parallel circuits.

Learn more about parallel connection: brainly.com/question/12400458

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7 0
2 years ago
The period of time required for the moon to complete a cycle of phases is called the ________ month.
eduard
Synodic month, also known as a lunar month.
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3 years ago
In a tug-of-war game on one campus, 15 students pull on a rope at both ends in an effort to displace the central knot to one sid
mojhsa [17]

Answer:

Net pull = 110 N to the left

Explanation:

Group the different pulls according to the direction (right or left)

2 pull 196 N each to the right

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The resulting force is negative, meaning the direction is to the left

6 0
3 years ago
¿Por qué si cargas a uno de tus compañeros por cierto tiempo no estás realizando un trabajo mecánico?
VladimirAG [237]

Answer:

I will answer this in English, we can translate it to:

Why if you charge a mate by an amount of time you are not doing work?

This happens because work is defined as the displacement done by a force:

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where W is work, d is the distance, and F is the force.

This means that the amount of time that you are charging your mate does not affect the mechanical work, the only time that you are doing work is when you are lifting him.

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