Recent content by Derek1997

ring detect pair of gama rays, thus detectors all around the ring would detect both photons, thus, localising the point of emission along that line between points where two photons were detected. Dude ik it's not 3 because positrons are not cheap. is it 1,3 and 4??

I said that tho

goal is to picture stuff in side body, the positoron would be injected to humans body, react with electron as it's more electron anti-particle annihilate both and emitting a pair of beta protons. Now using ring detector, it would be able to deterct protons, hence loacalising the emission. Image...

multiple answer

I guess it's 1,3 and 4 according to your questions.

Homework Statement Why does PET scanner use positron emitters? 1-positrons have more penetrating power than electrons 2-positron emitting isotopes are cheap and widely available 3-the location of emission can be located better because a pair of gamma rays get emitted from the body...

so cancells out?

btw am i right with the kinetic energy one??

yea but they don't balance out by gravitational energy?

tension on the spring? balances it.

So, ik gravition is the force but what does it do with equation?

yea true sorry. mouse is not on the ground.

gravitional potential and normal force? but don't you just need to state the equation?

where it remained same, no upward or downward motion, could you please check if i have a right answers? if it is i can send you the second part.

i think so. well how can it have it when it's 0?