When a high-power laser is used in the Earth's atmosphere, the electric field associated with the laser beam can ionize the air,
turning it into a conducting plasma that reflects the laser light. In dry air at 0°C and 1 atm, electric breakdown occurs for fields with amplitudes above about 3.00 MV/m.
(a) What laser beam intensity will produce such a field?
W/m2
(b) At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 3.44 mm?
W
(a) What laser beam intensity will produce such a field?
W/m2
(b) At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 3.44 mm?
W
1 answer:
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Answer:
Acceleration,
Explanation:
Initial velocity of a particle in vector form, u = (-5i - 2j) m/s
Final velocity of particle in vector form, v = (-6i + 7j) m/s
Time taken, t = 8 seconds
We need to find the magnitude of acceleration vector. The changing of velocity w.r.t time is called acceleration of a particle. It is given by :
or
Hence, the value of acceleration vector is solved.