Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1012 w)pulses of electromagnetic waves that last for an extremely short time (a few nanoseconds). these short pulses scramble the interior of a cell without causing it to explode, as long pulses would do. we can model a typical such cell as a disk 4.2 μm in diameter, with the pulse lasting for 3.2 ns with an average power of 1.61×1012 w . we shall assume that the energy is spread uniformly over the faces of 100 cells for each pulse. part ahow much energy is given to the cell during this pulse? express your answer in joules to two significant figures.