Recent content by overside

Homework Statement http://i.imgur.com/NcI8y.png?1 So i did A and got the answer of Fr to be {-129i, -221j} N and the Mra = -354k Nm which are right from the answer key so now about part b I think I should balance all moment at the G point about z axis or something like that thus...

OK nevermind, what I did was right, the teacher made type and give wrong angle, thank you anywayz

come on someone help me please D:

Homework Statement In a Young’s double-sit experiment performed with electrons, the two slits are separated by a distance of 2.0 x 10^-6m. The first-order bright fringes are located on the observation screen at an angle of 1.6 x 10^-4 degrees. Find the wavelength and momentum of the...

Ok so I made some progress from all the help you guys give and now I am at : T - mg = mv^2/r mgh = 1/2mv^2 v^2 = 2gh and since i figured h was 0.5r so: v^2 = 9.81r replacing that in initial yields: 800 - 9.81m = 9.81rm/r 800 = 19.62m m =...

Homework Statement A swing is made from a rope that will tolerate a maximum tension of 800N without breaking. Initially, the swing hangs vertically. The swing is then pulled back at an angle of 60.0 degree with respect to the vertical and released from rest. What is the mass of the...

"real" image from concave mirror Ok so in we are currently doing mirrors and reflections in physics and from what I learned there are 2 types of images: real and virtual. I know that a virtual image is what you see INSIDE the mirror; but what does a real image looks like? I can't find anything...

NVM BROS i figured it out, so simple in fact. Empty stomach does things to you !

arghh this is just making no sense to me, in fact I think i may be able to understand if you could just explain 1 point to me: this is my teacher's answers key: http://fizics.com/physics30/answers/pdf/Lesson02.pdf (Scroll down to #12, Girl part) My teacher labled the V1 as 5.0m/s +...

Well, I highly doubt my teacher will let me walk away if I told him what you said even if its true ... you know how to solve this problem the way it is intented though? for the sake of me passing my next test, pleeease tell me how anyway D:

EDIT: MASS OF CANOE IS ACTUALLY 50G I typed it wrong the 1st time :/ Homework Statement 50kg girl sits in a 50kg canoe at rest on the water. She holds two 10 kg cannon balls. she throws them over the stern of her canoe one at a time, each ball leaving her hands at a velocity of 5.0m/s...