Recent content by pinnacleprouk

Hi, thanks for the reply, the energies calculated for the first 3 energies are on the sheet given to me by the lecturer so not calculated by myself. I assume they are not real world examples

Homework Statement Diagram not to scale: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Energy (J) n = 3 ----------------------------------------… - 0.24x10^-16 n = 2 ----------------------------------------… - 0.54x10^-18 n = 1...

Homework Statement I have two sets of data, each with 30 distances and 30 results, I have the mean, median, mode, range etc, I have drawn histograms and cumulative frequency curves, got the IRQ for both sets of data. Now I need to compare the data using standard deviations and also find...

while I appreciate your reply, I would rather ask here to see if the steps taken are correct as well as the final result! Thanks

Could you please confirm my answers as correct or incorrect, if incorrect please point out errors and assist in correcting errors. Thanks in advanceHomework Statement Intergrate the following functions with respect to x using recognition, substitution or intergration by parts: x^2(2+x^3)^4...

Homework Statement Please help solve these two equations (giving two solutions) sin x =√ 2 cos x sin^2 x - cos^2 x - 2sin x = 1 Any help no matter how little is much appreciated Homework Equations The Attempt at a Solution Not sure how to solve these...

It doesn't state! The exact question is written above. Thanks!

Homework Statement The rate of heat loss to the outside through a 10mm-thick glass roof of a green house is 120kW. The length and breadth of the glass material of the roof are 20m and 2m, respectively. Calculate the temperature of the outside if the temperature inside the green-house is 25...

Homework Statement The rate of heat loss to the outside through a 10mm-thick glass roof of a green house is 120kW. The length and breadth of the glass material of the roof are 20m and 2m, respectively. Calculate the temperature of the outside if the temperature inside the green-house is 25...

Thanks for the reply, ok so I get 23.33 for x and -6.22 for y, Providing I have calculated the sums correctly, the minus is throwing me off in locating the centre? Thanks again!

Homework Statement Find the centre of gravity of this system of particles Homework Equations attached image showing diagram http://www.zshare.net/image/7209360586277b98/ The Attempt at a Solution Taking moments about a, 4*0+6*30 = 184 then not sure Any help is greatly appreciated Thanks...

Thanks for the reply, much appreciated only if you (or anybody) could go into slightly more detail on how to solve? I'm not quite sure on what you have explained! Thanks again

Homework Statement In the attached Diagram, the mass of 2kg is held in a stable equilibrium by two strings acting horizontally and 60 degrees to the horizontal, respectively. Calculate the tension (force) T1 and T2 required to keep the 2kg mass in equilibrium. The Attempt at a...

Homework Statement what is the magnitude and direction of the centripetal acceleration necessary to confine the motion of a 0.5kg mass moving at speed 0.1m/s to a circular path 0.2m in radius Homework Equations a = v^2/r The Attempt at a Solution 0.1^2/0.2 = a a =...

so would the answer to the original question be 1) 600 Radians 2) 34377 Degrees Thanks in advance