Recent content by atomant

Thank you so much for your help, you have been amazing!

Ah, I see - so the 10 at age 2 will on average have 30 offspring at t+1 (10 individuals and mx of 3). The question now then is do I assume that all 10 individuals are alive at t+1 to reproduce? i.e- at age 2 the have a mortality rate of 10%, which means 9 individuals will survive at t+1 to...

Well the basic idea was to calculate the Mx values for the age groups that had an initial population at times t, which means age groups 2 and 3 which has Mx values of 3 and 2 respectively. Therefore the number of 0 age offspring should be 5 (I think)..don't really know how I got 7. Is this correct?

Homework Statement http://imgur.com/OInF6O2 The blue table shows the mortality and offspring production rates per year per age class by individuals of an unnamed species. The orange tables shows the starting population at time t, I have to find the number of individuals at T+1 (next year)...

Also what abt when we Consider a hollow cylinder and a solid cylinder rolling down a hill. Both are released from rest at the same time. Which reaches the bottom first and why? what would happen in the case, where the overall composition is different?

I get it. Thanks for the help.

So what exactly am i missing?. G of the 2 planets?

Voyager 2 used a slingshot maneuver to approach Saturn and then move off in the opposite direction.Voyager 2 approached Saturn with a velocity of 12 Kms^-1. (relative to the sun). The orbital speed of Saturn is 13 Kms&-1. The question is what was Voyager 2's speed after the slingshot encounter...

So just to be clear, T(f) is the final kinetic energy and U(i) is the initial potential energy. Is that correct?

I see, it's clear except for the T_{f} and U_{i} part. That is suppose to represent the final kinetic (T_{f}) and initial potential (U_{i}) right?

so the total potential energy mgh is=kx. but I don't understand that, as the question does not give any values how do I answer the question?. If I was to solve for x the equation would read as x=mgh/k. So o I just state that the compression is equall to the mgh/k or is there another method for...

A body of mass m slides without friction from rest at height H to a lower height h, where it encounters a horizontal spring with strength k. by how much does it compress? To solve this i was wondering if we needed to take into account the changes in energy of the body. i.e 1/2 mv^2=mgh and if...

Of course!. I have been going around in circles:redface: Thanks!

I got a question. If a mass hangs motionless from a spring, what is the force exerted on the mass by the spring in terms of the spring constant, k? So I was thinking when a load of mass m is used on the spring it will stretch by a distance x, and as the extention is directly propotional to the...

Correct me if I am wrong but isn't there an equation a=mgμ0/M that relates acceleration to the friction of a surface. Hence wouldn't the equation read a=gμ0. Thus acceleration is independent of mass. So if two objects of different masses were to slide off a plank for example wouldn't they both...