Recent content by GlobalDuty

o ok, thanks for the responses. the problem was bad to begin with.

yeah, this is bothering me the wording is bad, but its not a trick question. i guess better wording would be: what's the probability that you open all the boxes and then find cake in the last one?

you open box after box until you get the cake. what's the probability that after opening 4 empty boxes, you open the last box with cake? i know that the probablity of finding cake in the first box is 1/5. i think for the 5th box you multiply: (1/5)(1/4)(1/3)(1/2) to get the answer. is this right?

what is: [log(log x)] / [log x]i would guess logx/1 but not sure

it doesn't have to be simpler, just not so complicated. thanks CRGreathouse, that helps,

what is another way to form (a+b)^c to another simple expression? like for example a^c+b^c doesn't work because its not eqivalent to (a+b)^c (without using squareroot)

Homework Statement The Question is number 18 in this link: http://www.sewanee.edu/physics/PHYSICS102/Ch28.pdf The Attempt at a Solution I Used X,Y,Z for currents. X for the segment straight down the middle. Y for the bottom to top segment on the left Z for the bottom to top segment on the...

thank you for the explanation

still confused. do you mean i just multiply (Current1)*(20 Ohms) = Vb (Current 2) *(10 ohms) = Va and then Va - Vb?

Homework Statement http://www.sewanee.edu/physics/PHYSICS102/Ch28.pdf It is number 18 in the link. The Attempt at a Solution I found the three currents but i don't know how to find the Potential Difference between two points. what formula am i supposed to use?

Homework Statement When a positive charge q is placed in the field created by two other charges Q1 and Q2, each a distance r away from q, the acceleration of q is a. in the direction of the charge Q1 or Q2 of smaller magnitude. b. in the direction of the charge Q1 or Q2 of greater magnitude...

Homework Statement Four identical point charges (+4.0 mC) are placed at the corners of a square which has 20-cm sides. How much work is required to assemble this charge arrangement starting with each of the charges a very large distance from any of the other charges?The Attempt at a Solution I...

yeah i divided by 1000 at the end, but .3 is wrong

Homework Statement Compute the cost per day of operating a lamp that draws a current of 1.90 A from a 110 V line. Assume the cost of energy from the power company is $0.0620 / kWh. NOTE: Enter your response with tenths precision. The Attempt at a Solution 1.90*110V*.0620*24 = .310992...

Does anyone know if there exists an equation for finding final velocity by just knowing: 1) Time, 2)final and initial position and 3)constant acceleartion?