Recent content by nikelberry

oh :rolleyes:! thanks for you help!

does that mean its neutral? and does this apply for ALL atoms?!

Homework Statement i have a question that i really need help on! A stable isotope of chromium is 52 Cr 24 Calculate the Charge of the atom!Homework Equations The Attempt at a Solution what i thought is 24x(1.60x10-19) but this gives me the charge of the nucleus! please help!

the formula is - specific charge = charge / mass and the 236 is the nulceon number & 92 is the proton number

hi, im have a few trouble working out this question, Calculate the ratio of charge/mass in Ckg-1 for the nucleus stated below 236 U 92 now i know the formula to use BUT I am having trouble with calculating the figures for Charge and Mass. (i know that the charge is...

yay! i got it! thanks for your help much appreciated! and that's my homework done!

The data for a ball and spring sensor is given below: mass of ball = 0.12kg spring constant = 30Nm-1 distance to be compressed = 3.6cm Calculate the force nessary to compress spring by 3.6cm. The deceleration which the force in (the 1st question) would cause in a mass of 0.12kg. i seem...

Kuruman! i just worked it out! Thanks a million for the help and a quick relpy!

but the thing is i need help on working out question 3 "work done against friction and air resistance" because i can't remember how to work this sort of question out! :(

calculating workdone due to friction and air resistance...HELP! Homework Statement this is my 1st post and i don't really no if i should put the whole question, so i will...just to make sure i get some help! A skier of mass 72kg, initially at rest, reached a speed of 32ms/1 at the bottom of...