The stream of particles has kinetic energy k (in ev). the mass of particles is m and half-life t (in seconds). find the distance in which half of the particles will decay: vje t e ет к ikt 12k a) 2in(2) v b) 21n (2) vm c) 2ln(2) v m •d) 2ln(2) m 0905 t 2k

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

What was the first instrument to ever record an earthquake?

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9