Recent content by mccarthyp64

1. How much energy is released during the fission of one uranium-235 nucleus? 2. e=mc2 lol :smile: 3. I thought of putting them together but then how to separate them? 1.67495×10-27+3.903 05×10–25×c2=1.7539207313048996244767495×10-7 By the way, the answer is 4.73×10-11

Ep=mgh=Ek=1/2mv2 1.176=0.4*9.8*0.3=1.176=0.5(0.4)(v)2 (1.176/0.5)/0.4=v2=5.88 √(5.88)=2.42=ANS! YAY thanks gneill :)

for q 25 velocity is the answer and in 26 I need the work done

There is kinetic and potential gravitational energy so Ek=1/2mv2 but that needs velocity so: Ep=mgh but that only gives horizontal velocity whereas, I need all velocity.

1. All in the picture 2.v2=u2+2as 3. I have no idea where to start, I went through all the equations but i don't have time or velocity to sub in :( It also has circular motion which may or may not introduce pi. I didn't think this would be relevant but anyway.

Problem being that repeating gives you an octagon http://upload.wikimedia.org/wikipedia/commons/6/66/Regular_octagon.svg Instead of a circle, because the side of a circle isn't straight etc. P.S. I only figured this out 2 days ago