Question

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 4.6 μm in diameter, with the pulse lasting for 4.8 ns with an average power of 2.35×10¹² W . We shall assume that the energy is spread uniformly over the faces of 100 cells for each pulse.

A) How much energy is given to the cell during this pulse?

B) What is the intensity (in W/m2) delivered to the cell?

C) What is the maximum value of the electric field in the pulse?

D) What is the maximum value of the magnetic field in the pulse?

Answer 1

CIven obta, Of amat es4 6AD Ne 100C0AS Powos 2.35Y102 t4.8ns 4.8x1s Aue Knouw that E Pt (00 loo E =112.9 boeachalls B) Jntensi tyPouos Aea 2/3SYI2 C A-ta 100TY 16 2.3S XIO2 66 Y1 c) 2T Eo= CEo 2XIKlo2 3x 09x8 831 15 12 2.30 x 1016 v1m Eo Eo 2301106 3J08 7660T