Recent content by Charlie Brown

PLEASE HELP!...Convergence and Divergence! Can n e one help me with this! its determining whether or not a series is convergent or divergent...Thanks http://img.photobucket.com/albums/v211/chu_bear10/Calcy.jpg"

An incident radiation has a wavelength of 42.86 nm and is consequently enough to eject electrons through a retarding potential of 20.95 volts, so that they end up with a velocity of exactly 6.00 X 10^5 m/s. Calculate the work function of the particular metal. (Answer id electron volts)

I'm not sure what the minimum velocity would be...if it helps, there's someone at the bottom of the rope that's supposed to catch her. And the question just asks for the method that she sould used to slide down the rope.

Help Please! I have 2 questions that i need help with: 1) A girl has a mass of 60 kg. She wishes to slide down a rope made of nylon stockings from a second story window. The stockings will break if the tension in then exceeds 400 Newtons. How should she slide down the rope so that she lands...

Thank you...is 0.801 the answer?

A supertruck is fighting its way up an steep 65 degree incline with an acceleration of 3.3 m/s^2. If the truck has a mass=1.00 tonne and an engine applied force of 1.55 X 10^4 Newtons, find the co-efficient of friction. 1 tonne = 1000 kg **I got 0.80 as my answer...can anyone confirm this?

Thanks again!

Thank you so much! I'm still slightly confused though. I get how you got the data from the problem statement...and I understand the substitution of the 2nd Eq'n into the 1st. Can you explain to me how you got the 2 initial equations: 1) {Swimmer Upstr Speed}*{Time Upstr} + {Swimmer Downstr...

Thanx! :smile:

:cry: :cry: :cry: :cry: :cry: can nobody help me??

Help on a Problem! Hi there everyone. I am completely lost on how to go about answering this question :cry: A sunbather, drifting down the Grand River on an inner-tube, dives off the tube as it passes under the high bridge of Elora Gorge. She swims against the current for 15 mins before...