Recent content by mendem03

Homework Statement Assuming the Earth to be comprised of only a uniform density mantle and a uniform density core and the mean density of the mantle to be 4700 kg=m3, determine the mean density of the Earth's core. Take Earth's radius to be 6400 km and the radius of the core to be 3500 km...

Thank you for the help

Homework Statement Suppose we place a perfectly black sphere (i.e., a sphere that absorbs all energy it receives) with radius 2500 km at a distance of 5.2 AU from the Sun. How much energy does the sphere absorb in one second? energy emitted by sun is given to be 3.90 * 10^26 Homework...

I want to know how to start this problem, but don't want the answer. If someone can just help me get started or give me a tip on how to approach these kinds of questions

I need help help to figure out how each of those steps were achieved

2^(n +1) -2+1 / 2^(n+1) this just means that: 2 to the power of (n+1) -2+1 divided by 2 to the power of (n+1) the next step is 2^(n +1) -1 / 2^(n+1)

Question 1 step 1 =(2^n-1)/2^n + 1/2^(n+1) step 2 =2(2^n-1)/2^(n+1) + 1/2^(n+1) step 3 =2^(n +1)-2+1/2^(n+1) I don't know how steps 2 and 3 where achieved can someone please help me

Thank you for replying and helping me out I have not proven 1 greater than 0 before but can you give me a pointer on how to prove that or another way of doing this proof

Question if a < b, then -b < -a proof if a < b then a-b<0 and b-a>0 so a-b<0<b-a so -b<-a Question if a<b & c<0, then ab>bc proof if ac<ab then ab>bc then ac<ab>bc then ac>bc Question if a>1 then a^2>a proof a*a > 1*a lemma 1: a*a = a^2...

Ok let me explain everything I am currently going to University of Toronto in first year I am in the computer science program and the courses we are recommended to take are: mata31h3 calculus 1, mata37h3 calculus 2, mata27h3 linear algebra 1, csca08h3, csca65h3 and another computer science...

I am in the computer science program and this is a recommended course. I don't know about the second book but I'm going to guess we will be using that one for calculus 2 in 2nd semester

We are studying chapter one and I have never done this kind of math before

I am having a really difficult time doing these proofs and want to know how i need to confront them and if there is a good strategy to solving these. I am in first year university. I understood the problem the prof went over but when i try to do on my own, I am just not able to prove them. I...

I have a question I got rejected from my engineering courses but was given an alternate offer to admit into sciences. So if I except the offer can i transfer to an engineering University after one year because I really want to get an computer engineering degree or an astronomy degree . The...