Recent content by 21385

Hi, I am looking for any physical chemistry textbook without a lot of calculus. I have been looking at physical chemistry for biological sciences but I am unsure if they cover the same topics as the regular atkins and other physical chemistry do. Does anyone have any suggestions for good books...

Homework Statement It’s the dance, and you’re setting up your equipment in the ballroom of the Hilton. There are three wall outlets. Explain as well as you can how you set up two 1500 W speakers and appropriate equipment to ensure that you don’t lose power. Homework Equations P=IVThe Attempt at...

What do you mean when you say the mass distribution is not symmetric? Sorry but I still don't understand.

i am unsure but wouldn't the find a new center of mass method also work? in theory at least? because you are believing that all the mass is concentrated in the new center of mass.

Homework Statement A small cylinder with radius R has been cut out of a larger cylinder with radius 2R. (With part of the circumference of the small cylinder and the large cylinder touching each other, so it kinda looks like a crescent) The mass of the larger is M. What is its gravitational...

srry about that...i just randomly put a few numbers down... If the equation is like:: 2=3sinX+cosX How would you solve that?

How can you solve for X, an angle, if you get an equation like this? 5=2sinX + cosX I couldn't think of any trig identities that can solve this, even though this may be extremely easy. Can someone show me? Thanks

Homework Statement In problems involving electromagnetism it is often convenient and informative to express answers in terms of a constant, x, which is a combination of the Coulomb constant, k, the charge of an electron, e, and H=h/(2pi), with h being Planck's constant. For instance, the...

sorry but i still don't really get it how does the 0.02 m affect the equation?

Homework Statement Without her contact lenses, a student can focus an object located 0.80 m to infinity from her eyes. The power lens, measured in diopters, is the reciprocal of the focal length, measured in meters. Assuming that the image distance in the eye is 0.02 m, what lens power does...

Homework Statement At the shallow end of a swimming pool, the water is 70.0 cm deep. The diameter of the cone of the light emerging from the water into the air above, emitted by a light source 10.0 cm in diameter at the bottom of the pool and measured by an observer on the edge of the...

I think you are looking for the formula for thermal expansion. change in volume=(coefficient of volume expansion)(initial volume)(change in temperature)

Thanks, Doc Al I got the problem, and it is y=h/1834

Homework Statement A proton sits at coordinates (x,y) = (0,0), and an electron at (d,h), where d>>h. At time t=0, a uniform electric field E of unknown magnitude but pointing in the positive y direction is turned on. Assuming that d is large enough that the proton-electron interaction is...

I think this is more of a distance problem than a waves problem. So, the speed of radio waves is the speed of light, 3*10^8 m/s...so use time=distance/speed Do the same thing for sound, where it travels at 343 m/s.