Recent content by the_godfather

Similar sort of position here. Getting that low class degree doesn't help in any way shape or form. It is a major drawback. Can't get any job. any at all. I've worked in retail for 6 years. Most will reject me straight away unless I have a good reference from someone already there. Not even a...

That didn't help me unfortunately, would you be able to elaborate a bit more please... My current understanding is that the energy impacting the sphere would depend on the latitude of the sphere, in a way similar to how solar radiation is more intense on the equator than nearer the poles (in...

Homework Statement A spherical shell of diameter D, filled with hydrogen orbits the earth. The average intensity of solar radiation, in a plane perpendicular to the rays is 1.4kW/m^2. Calculate the total force of solar radiation pushing it off its orbit as a function of the shell's albedo...

apologies. Was being dumb for a moment there. I believe I have it now. thanks

\frac{2}{2} H . \frac{\partial H} {\partial t} not sure why you need to chain rule though?

u = initial speed s = displacement v = final speed t = time a = acceleration

there is a set of equations relating s, u, v, a and t. they are called the kinematic equations. They should be covered in last couple of years of high school/6th form (years 12 & 13)

Homework Statement Prove and explain the Ponyting theorem Homework Equations S = E x H [1] \nabla.S = \nabla.(E x H) [2] \nabla x E = -\partialB/\partialt [3] \nabla x H = \partial D/\partialt [4] D = \epsilonE + P [5] B = \muH + \muM [6] The Attempt at a Solution I understand I am to...

Homework Statement \int\int x^3(x^2+y^2) dy dx limts of x between 2 and -4 and y limits between 5 and 0 Homework Equations The Attempt at a Solution i get an answer -17426 2/3 which doesn't seem right plugged the formula into maple and has given me an answer of -5860. my...

Homework Statement this is part of a problem sheet and is the last question i have left to work out. i have been given solutions of 105dB and 86dB. A person is in a room in which two sources of sound of loudness 100 dB and 98 dB are emitting the same frequency. The sources form a...

awesome thanks exactly what I'm looking for

any good notes/videos concerning green's theorem in plane? unfortunately missed my double lecture on it due to illness

so i should get an answer of 4?

x and y are both > or = 0. which to me implies only a quarter way around dx and dy will become dr and d(theta) \int theta 0 \int2 0 2r sin theta r dr d(theta)

yes it is a semantic issue. what i have written on paper is different to my typing. just a bad habit to always press equals on a computer. what is my next step? i think once i get the limits sorted i will be fine the limits are 0<r<2 0<=theta<=pi/2 can the y factor be expressed as r sin theta?