Recent content by p.ella

Homework Statement graph the curve C that is described by r and graph r′ at the indicated value of t. I've attached the actual question as a picture as a picture file Homework Equations none The Attempt at a Solution I know x(t)= 2, y(t)=t , z(t)=4/1+t^2 when x=0, r(t)=t+4/1+t^2 when...

yea that's what I originally thought too, thanks a bunch! (:

Homework Statement r(t) = ln ti + j, t > 0 find r′ (t) and r″(t)Homework Equations none The Attempt at a Solution r'(t)= 1/t i am I on the right track? The answer in the back is r'(t)= 1/t i -1/t^2 j Please help asap this is quite urgent! Thank you!

Hey, first off thank you so much for responding :) I seem to be okay with everything except part B) of the problem, don't really get the bit at the end to be honest :frown:

Absolute Vales with fractions HELP PLEASE :) hey everyone, Homework Statement find the solution set: l 1/x -3 l > 6 Homework Equations none The Attempt at a Solution 1/x > 9 or 1/x < -3 1 > 9x or 1 < -3x 1/9 > x or -1/3 > x this answer doesn't seem...

Thank you so much for the wonderful advice everyone, I truly do appreciate it! & to the person above, I shall definitely go for a subscription!

I got accepted to Medical Physics at Ryerson but don't understand what exactly it is. Can you guys please explain what it is, and what possible careers are associated with it?

nevermind, I realized my method was wrong and got the answer. Thanks again!

hey sorry, but I'm still not getting the right answer for some reason, here's my solution (see picture)

Pretty much yea. Thank you very much! :)

Would the final charge of each be 2C ?

Simple Coulomb's Law Question Please Help! Homework Statement Two identical charged objects have charges of 6μC and -2μC. When placed a d distance apart, their forces of attraction is 2N. If the objects are touched together, then moved to a distance of separation of 2d, what will be the new...

Thanks anways Sunil :) And no, I haven't, not yet atleast :)

Thankyou, this really helps!

chem12 Thermodynamics -- thermal energy question Homework Statement Which would have a higher amount of thermal energy: cup of tea @ 75°C OR bathtub of water @ 50°C Homework Equations q=mcΔT The Attempt at a Solution I know both are made of water with a specific heat...