Recent content by bruinboy28

Homework Statement What is the frequency of a photon of energy 58eV? Homework Equations E=hF where H is Planck's constant, 6.63x10^-34 The Attempt at a Solution 58/ (6.63x10^-34) = 8.75e34 that is not correct. Do i have the energy eV into a certain unit?

what did you get?

ok, since i ran out of tries trying to calculate for the forces. lets find acceleration using the electron as a negative.

the problem is... the answer that i have for the Force is NOT CORRECT. without that, I can't get the force.my math is right, right? but somehow the internet keeps saying its the wrong answer. This for an electronic hwk so it tells me if the answer is wrong or right. but i only have a certain...

An electron has a velocity of 2.00 106 m/s perpendicular to a magnetic field of 3.3 T. What force does the electron experience? 1.06e+-12 N (an in the electronic hwk they said it was wrong) What acceleration does the electron experience? m/s2

the answer it wants is in Newtons

Homework Statement An electron has a velocity of 2.00x10^6 m/s perpendicular to a magnetic field of 3.3T. What force does the electron experience? Homework Equations The Attempt at a Solution F=qvB q=1.6x10^-19 (the charge of an electron) V=2.00x10^6 B=3.3...

a.by creating current by rotating in an existing magnetic field? b.by creating a varying magnetic field with its rotational kinetic energy c.by rotating through areas of high and low electrical force An electric field produces a magnetic field even when there is no wire to conduct a...

doh!:rolleyes: thank you redbelly! you have been a really great help. I need to understand what they are asking for sometimes. if that's what they are looking for then, we are done!

help...please

that's weird, when i punched in the numbers i got it the first time. I can see the equation in the book that you used as a hint for me Efficiency= (useful energy or work output/ total energy input ) x 100% Efficiency= (259.2 MJoules)(.30) / 259.2 MegaJoules , right? what am I doing wrong...

259,200,000 x (.30) =77,760,000 .30 = 77,660,000 / 259,200,000

^ I am confused. So let me get something sorted out The energy of a 100 watt on for a month produces an energy of 259.2 megajoules. but since its' only at 30% efficiency. then... (energy) x (efficiency) = x = 77,760,000 So... 259.2 J - x= ? am i making sense at all??

ok so Energy= 100watts (2,592,000 seconds)=259,200,00 am I doing it, right? :C eee.. 1000 J/s 259,200,000=259200 Joules if i needed to convert the seconds into joules... Energy= 100watts x 259200 = 25,920,000-------------------------------------------------------------BETTER...

kk. So Do i keep it in joules to proceed to this problem? Since it ask for joules, I should covert the seconds into joules. when it says the electricity generation and transimission is 30% how much chemical in joules was wasted at the power plant for this oversight?, how do i compute these into...