Recent content by marshall4

What is the relationship between the maximum electric current and the intensity of incident light? -are the inversely proportional? What colour has the larges cutoff potential? -is it yellow? Is cutoff potential effected for violet light? -no? How do you calulate maximum kinetic...

ya, I'm confused

How many kilowatt-hours does a 60 watt bulb use in 3 hours? how can i convert that to amps?

How may watts does a 60-watt light bulb use in three hours? 60*3=180watts?

Find the final speed of an electron, starting from rest, passing between two parallel plates with a potential difference of 5000V. m=9.1*10^-31kg q=1.6*10^-19C v=sqr root of [2(1.6*10^-19)(5000)]/9.1*10^-31 = 4.2*10^7 m/s Is this answer valid, why?

If i try this E = \lim_{q-->0} \frac{F}{q} i will get E = \lim_{q-->0} \frac{F(x+q)-F(x)}{q} , i don't kow that the numbers are? I don't think i got the step before this

This is what i did Fe=[(9.0*10^9)(2.5*10^10-5)(3.7*10^-70]/(.25)^2 =1.332 E = F/q , but i don't know that charge at C Is that what i do? Or what did i do wrong PS. Is there some kind of software that i can get so i don't have to keep using ^ for exponents?

When i use the formula F_{AB} = k\frac{Q_1 Q_2}{r^2} Do i multiply that negative sign in the equation for a negative charge?

The charged electron is 1.602*10^-19, right?? What are all the multiples of that and how would you find that?

5.7*10^-4N/2 = 2.85^-4N What have i done wrong?

How did you figue out F_{AB} = k\frac{Q_1 Q_2}{r^2} = 6.796 * 10^{21} k=9.0*10^9 q1= 2.5*10^-5 C q2=-3.7*10^-7 C r=0.35m With those numbers i got -0.6795 N What did i do wrong? Also, can this problem be solved by finding electric fields separately and then adding them??

How do i find the charge (q) at C for E = F/q

What charge is required to suspend a 1.7*10^-13kg oil drop in an electric field of 2.5*10^5 N/C?

The electrostatic force between two point charges is 5.7*10^-4N. The charge on one of the point charges triples and the distant between the points doubles. What is the force between the two point charges?

What was his experiment and what did he find?