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• High-energy cancer treatment. Scientists are working on a new technique to ķill cancer cells by zapping them with ultrahigh-energy (in the range of 10'² W) pulses of light 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 5.0 µm in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0 × 10'² 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/m³) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?

• High-energy cancer treatment. Scientists are working on a new technique to ķill cancer cells by zapping them with ultrahigh-energy (in the range of 10'² W) pulses of light 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 5.0 µm in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0 × 10'² 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/m³) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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• High-energy cancer treatment. Scientists are working on a new technique to ķill cancer cells by zapping them with ultrahigh-energy (in the range of 10? w) pulses of light 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 5.0 µm in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0 × 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/m³) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?
Transcribed Image Text:• High-energy cancer treatment. Scientists are working on a new technique to ķill cancer cells by zapping them with ultrahigh-energy (in the range of 10? w) pulses of light 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 5.0 µm in diameter, with the pulse lasting for 4.0 ns with an average power of 2.0 × 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/m³) delivered to the cell? (c) What are the maximum values of the electric and magnetic fields in the pulse?
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