electron mass

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Kailie_Giebink_1E
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electron mass

Postby Kailie_Giebink_1E » Mon Apr 16, 2018 1:37 am

do electrons ever possess enough mass to make a difference

Chem_Mod
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Re: electron mass

Postby Chem_Mod » Mon Apr 16, 2018 12:55 pm

It depends on what you are talking about. The value is important in knowing for fields which study electronic transport etc.

Isabella Barkett 1G
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Re: electron mass

Postby Isabella Barkett 1G » Wed Apr 18, 2018 1:11 pm

Electrons have a mass but in comparison to protons and neutrons in an atom, they will not affect the total mass I think.

ZachMoore1C
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Re: electron mass

Postby ZachMoore1C » Wed Apr 18, 2018 2:10 pm

It is a constant weight of 9.1095x10^-31 kg

Komal Prakash 1H
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Re: electron mass

Postby Komal Prakash 1H » Wed Apr 18, 2018 8:58 pm

The small mass of an electron is significant as it allows us to observe the wavelike properties of an electron even when it is traveling at high speeds (even as the speed gets closer to the speed of light, the mass is so small that the wavelength=(h/(mass X velocity)) is observable.

Myles Chang 1B
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Re: electron mass

Postby Myles Chang 1B » Sat Apr 21, 2018 12:17 pm

It will make a difference on the test. I would guess at least a few of the calculations on the test will involve finding properties of an electron based on its momentum, which you need mass to find.

Jack Dias
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Re: electron mass

Postby Jack Dias » Sun Apr 22, 2018 4:44 pm

Yes, its mass will be important to know for the test. It may be given to us but I wouldn't rely on that. The mass isn't considered for stuff like the atomic mass, as only protons and neutrons are considered due to their much greater mass, but for our upcoming case it is imperative to consider the electron's mass.

Best,
Jack Dias

yazminedesan1F
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Re: electron mass

Postby yazminedesan1F » Sun Apr 22, 2018 5:32 pm

yes it's important to consider it

Vienna Cimetta 1L
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Re: electron mass

Postby Vienna Cimetta 1L » Sun Apr 22, 2018 8:17 pm

also i'm pretty sure they said the mass will be given on the front page of the test, so don't worry about memorizing it

Isabelle De Rego 1A
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Re: electron mass

Postby Isabelle De Rego 1A » Sun Apr 22, 2018 8:44 pm

Yes, watch out for calculating the kinetic energy (1/2mv^2) of an electron, in which you will need the mass of an electron. Also, if you need to calculate the wavelength of an electron, you would use de Broglie's equation, not c=h*lambda because an electron has a mass, whereas a photon's mass is negligible.

004985802
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Re: electron mass

Postby 004985802 » Thu Apr 26, 2018 7:45 pm

mass of e =9.1095x10^-31 kg
it depends on the degree of the precision of your measurement but, yes, this small mass can make a difference

AnnaYan_1l
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Re: electron mass

Postby AnnaYan_1l » Thu Apr 26, 2018 8:17 pm

It depends on what you're talking about, but yes, they have a definite mass that can be important in some contexts.

Shimran Kumar 1C
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Re: electron mass

Postby Shimran Kumar 1C » Thu Apr 26, 2018 9:03 pm

The test definitely gives you the mass of an electron.

yazminedesan1F
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Joined: Thu Feb 15, 2018 3:00 am

Re: electron mass

Postby yazminedesan1F » Sun Apr 29, 2018 4:45 pm

the test should definitely give you the mass of an electron, proton, and photon i believe

fara valdez
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Re: electron mass

Postby fara valdez » Sun Apr 29, 2018 11:06 pm

If it is relevant, it will be provided for your calculations.

Surya Palavali 1D
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Re: electron mass

Postby Surya Palavali 1D » Sun Apr 29, 2018 11:09 pm

Whether it makes a difference depends on the problem. Electrons do have mass, but it's extremely small. The exact value will probably be provided on the tests.


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