Recent content by prolong199

The solutions say the answer is c) 2 but i have no idea. I tried expanding it out with the y terms and taking over to the left with dy, and the constant on the right with dt, then integrate is this correct?

Im studying for my final coming up and i can't figure out the differential equation in the practice exam, can someone please help me? y'=(y-2)^2(y-4) if y(0)=3, the limit of y(t) as t goes to infinity is? a) infinity b) 4 c) 2 d) 0 e) -infinity thanks.

thats what I am thinking, it says a time varying force, but you can work out the force with regard to mass and acceleration fro the displacement function. So to answer your question, there is no other information provided for the question.

could someone please lead me in the right direction with this question. I am confused about the time varying force in determining the work done A time-varying force acts on a 5 kg mass yielding a displacement x = 5t - 8t2 (x in m). The work done by the force between the times t = 0 and t =...

I have to find the average kinetic energy of a photon on the sun, given that E=kT where k=Boltzmann's Constant and the internal temperature of the sun is 15x10^6K. Can someone please leed me in the right direction, thanks.

i have the following for a multiple choice question .." If a nucleus had a diameter of 8x10^(-15)m what would its atomic mass be?..." I have calculated the answer to be 512, however this is not a solution. The solutions are 7, 37, 64, 296. Is the correct solution here? Thanks

i found that the diameter of a proton is 1x10^(-15)m with atomic mass 1, but how do i calculate the atomic mass of an atom with diameter 8x10^(-15)m?

could someone please leed me in the right direction for calculating an atoms atomic mass given the diameter of its nucleus? thanks

I used trig to work out the angle from the source to the point 4.1mm from the maximum. I then used this angle in the equation.

I worked out that the angle is 0.191 degrees, substituting into the equation i get 0.0175*I, do i then multiply by 546.1nm?, I am confused about the Io

sorry i forgot to add it in the first place, yes i think it is the one is added to my question?

I have the follwoing question for prep for a lab, i have tried to work out the answer but i am struck with trying to work out the intensity at a certain point, in this case 4.1mm from the central maximum. I have tried using trig to calculate the angle to the point using trig then using...