Recent content by abohn1

Okay, thanks!

oh, whoops, acceleration is what i meant. soo, let's see. F = ma a = v^2 / r so F = m (v^2) /r this must be less than or equal to the frictional force...? and the frictional force f = (coefficient) * mg so.. m(v^2)/r = mg * (.4) (v^2) / r = .4(9.81) r = 50 solve for v, and v...

Well, I was thinking to set F=ma equal to the centripetal force F = m (v^2) / r which would work for the first 2 parts I suppose, just not sure where to put the frictional force in. Should it go to the original force equation? Or both? It seems to me like it should be relavant in both, but as...

Okay...thanks, but I'm still a little confused as to what equation(s) to use?

A sign on a National Forest road says: CAUTION! DANGEROUS CURVE AHEADóREDUCE SPEED TO 20 MPH. One day, a particularly bright physics student gauged the coefficient of friction between her tires and the road to be 0.40. Calling on her extensive knowledge of physics and her skepticism of...

1. In a collection of hydrogen gas, 100 electrons are located in the n=3 orbit. A. What is the frequency of a photon that could have been absorbed to cause an electron to transition from its ground state to the n=3 orbit? Now, as these electrons return to their ground states, assume...

Science-fiction movies and TV shows often refer to antimatter propulsion drives. This is not as far-fetched as it may seem. In a matter-antimatter annihilation event, a particle and its antiparticle annihilate each other and release all of their mass energy (such as in the reaction p+p→2γ...