Recent content by Psycotic.Goth

Thanks a lot Jared - I feel dumb now for using SUVAT lol -PsyG

Homework Statement Calculate thow long it would take a ball to orbit the Earth once , just above the surface , at a speed of 7920 ms^-1 . The radius of Earth is 6400km. Homework Equations Well I am not sure to be honest. The Attempt at a Solution I tried using S=ut+1/2(a)(t)^2...

Hi again - thanks that did help - Well, I've done the first part of getting the velocity using the conservation of momentum formula - I got it out to be 363636.3636 - Now I am stuck at finding the mass 'm' :((

Im not sure how to calculate the mass of the alpha particle

Homework Statement A stationary radioactive nucleus of mass M ejects an α-particle of mass 'm' at a speed of 2.0 x 10^7 ms^-1 . Given M=55m, calculate the kinetic energy of the α-particle as a percentage of the final total kinetic energy.Homework Equations K.E=1/2 x M x V^2 {half...