Recent content by helpme2011

oh ok. 40 to the horizontal. i think i get i now though :)

So you don't consider Fg at all ? :S Hmm...what if Fg and Fn are equal...and Fn is 24cos40? I'm really confused :(

Homework Statement A 12 kg box is pushed along a horizontal surface by a 24N force at 40 degrees. The frictional force (kinetic) acting on the object is 6 N. What is the acceleration of the object?Homework Equations Ff= uFn Fn= Fg + Ft ??The Attempt at a Solution My Fn = 136 N Ff = 16.3 N ma=...

I've also tried egg white! I need at least two more materials I think.

For this lab, I'm supposed to use materials that heat up but doesn't allow heat to transfer. I've used raw spaghetti noodles already but I still a few more for more trials. So what materials are good for this lab? after heating up the material, I measure the distance between the "hot spots" so...

Bad news...someone in my class has already chose that topic :( any other suggestions? string theory, black hole and photoelectric effect are also taken...

WOWWWW that video just blew my mind! Pretty awesome actually xD. thankss!

I need to choose a topic from any theories from quantum physics and write an essay about 500-1000 words and present it to the class. Because this assignment is for summer school, my teacher doesn't want it to be too complicated but at the same time interesting enough for a 10 minute...

Ok. Thanks! :) and to find the radius, do i use the equation: a= v^2/r ?

Oh..I just googled it :S but does it have a charge of 3.2 x 10^-19 Coulombs? so would that just be my Q and plug that into the equation of F= QvB?

Homework Statement An alpha particle enters a uniform verical magnetic field of 1.0 T with a velocity of 2.0m/s East. a) Find the force exerted on the particle by the field. b) Find the acceleration of the particle. c) Find the radius of curvature of the path of the particle. Homework...