Recent content by Eagle's Wings

why am i using time constant?

Homework Statement A 10.0-μF capacitor is charged by a 10.0-V battery through a resistance R. The capacitor reaches a potential difference of 4.00 V at the instant 3.00 seconds after charging begins 1.) Find R 2.) Find the current at t=3.00 seconds after charging begins. Homework...

remember what you have and what you want to know. you have ΔT, c, and P (which is Q/t) and you want kg/s (which is mass/time)...i think there is an equation for that, do you remember it? remember, your answer is going to be in kg/s.

just kidding, i just figured it out. i can use the equation of heat entering the system which is Qh which is on segment bc which is isobaric so i can use Cp to solve for Qh!

also the segment ab is isothermic. I don't see how that would help any though

Homework Statement You build a heat engine that takes 1.00 mol of an ideal diatomic gas through the cycle abc, where segment bc is isobaric and segment ca is isochoric. calculate the thermal efficiency of the engine. this is a 5 part problem and I already solved for Wo and Wo=Qo I solved...

oh, thanks. I just add Mp + Mn to get M...right?

Homework Statement A deuteron is the nucleus of a hydrogen isotope and consists of one proton and one neutron. The plasma of deuterons in a nuclear fusion reactor must be heated to about 300 million K. (a) What is the RMS speed of the deuterons? Is this a significant fraction of the speed of...

wait, never mind. it is asking for the gravity on that moon so I just use the same equation used to find gravity on the earth. Answer to my own question: yes, yes you are using the wrong equations.

Homework Statement Titania, the largest moon of the planet Uranus, has 1/8 the radius of the Earth and 1/1700 the mass of the earth. a) What is the acceleration due to gravity at the surface of Titania? b) What is the average density of Titania? Homework Equations F_{g} =...

Homework Statement a hollow cylindrical copper pipe is 1.5m long and has an outside diameter of 35cm and an inside diameter of 2.5 cm how much does it weight? Homework Equations ρ = M/V = 8.9E3 w = Mg The Attempt at a Solution okay, so I know that I can just solve for M because...

okay, that makes sense. thanks so much

is that the center gravity equation?

I don't think anyone is born genius but I believe that if you really wanted to excel, it would be best to have a pursuing attitude and it would help if you were actually fond of what you were pursuing.

i assume that you were using W=mgh and U=mgh? this is only correct when it is vertical, but since there is an angle θ, you need to use that other Work equation (W=Fdcos θ) which means that potential energy is not the same as Work. again, that would only be true if it were vertical such as a...