Recent content by syjxpatty

Homework Statement In outer space a rock with mass 4 kg, and velocity < 4000, -2800, 3400 > m/s, struck a rock with mass 18 kg and velocity < 250, -290, 260 > m/s. After the collision, the 4 kg rock's velocity is < 3600, -2300, 3900 > m/s. What is the final velocity of the 18 kg rock...

Homework Statement A horizontal spring with stiffness 0.6 N/m has a relaxed length of 18 cm (0.18 m). A mass of 23 grams (0.023 kg) is attached and you stretch the spring to a total length of 25 cm (0.25 m). The mass is then released from rest. What is the speed of the mass at the moment...

ok! I got the separation as 4.5x10^-15 m ! Thank you!

Ohh alright so do I still do, e = kq^2/r where r is distance between protons k is 9*10^9 0.16 * 1*10^6*1.6*10^-19 = 9*10^9 * (1.6*10^-19)^2 / r then I got r as (9x10^-15) the thing is that I got it wrong when i did it this way.

Homework Statement Two protons that are very far apart are hurled straight at each other, each with an initial kinetic energy of 0.16 MeV, where 1 mega electron volt is equal to 1x10^6 multiply (1.6x10^-19) joules. What is the separation of the protons from each other when they momentarily...