Which of the following statement(s) is/are correct?

(i) nuclear fission was discovered when 238u was bombarded with alpha particles.
(ii) the control rods in nuclear fission reactors are composed of a substance that emits neutrons.
(iii) electric power is widely generated using nuclear fusion reactors.

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

If a balloon is taken outside on a very cold day, what will occur?