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The cylindrical beam of a 12.8-mW laser is 0.940 cm in diameter. What is the rms value of the electric field?
answer in V/m*
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- The maximum electric field strength in air is 3.0 MV/m. Stronger electric fields ionize the air and create a spark. What is the maximum power that can be delivered by a 1.1-cm-diameter laser beam propagating through air? Express your answer to two significant figures and include the appropriate units. P=A high-energy pulsed laser emits a 1.1-ns-long pulse of average power 1.5×1011 W. The beam is nearly a cylinder 2.3x10-3 m in radius and it travels in free space. ▼ Determine the energy delivered in each pulse. Express your answer to two significant figures and include the appropriate units. AU = Submit Part B Erms = Submit Value Provide Feedback μA Determine the rms value of the electric field. Express your answer to two significant figures and include the appropriate units. Request Answer O ■ μA Value Units Request Answer ? Units ?A 13.0-mW helium-neon laser emits a beam of circular cross section with a diameter of 3.10 mm. (a) Find the maximum electric field in the beam. (b) What total energy is contained in a 1.00-m length of the beam? (c) Find the momentum carried by a 1.00-m length of the beam. Step 1 We will find the reasonable size of the electric field in a beam of bright light. At the speed of light, only a small fraction of a joule is contained in a meter-length beam. The momentum of the beam is a very small fraction of a kg. m/s. Light is described by energy and momentum but possesses no mass. Step 2 We will use the equation relating the intensity of light to the wave amplitude. From the definition of intensity, we can find the energy content of the beam of light. Then the relationship between momentum, energy, and the speed of light will give us the momentum of a length of the beam. Step 3 The intensity of light I is given by the average magnitude of the Poynting vector. We have 2 I = S₂ avg P Tr²…
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- A 15.0 mV helium-neon laser emits a uniform beam of circular cross section with a diameter of 2.0 mm. Find a) the maximum electric field in the beam. b) the total energy contained in a 1.00 meter length of the beam. c) the momentum carried by a 1.00 meter length of the beam?An argon-ion laser produces a cylindrical beam of light whose average power is 1.10 W. How much energy is contained in a 2.92-m length of the beam? Number i UnitsA high-energy pulsed laser emits a 1.0ns Long pulse of an average power 2.2x10^11 W. The beam is nearly a cylinder 2.2x10^-3 m in radius. Determine the energy delivered in each pulse and the rms value of the electric field
- In the Figure, if a;=10 Np/m ve B1= 1,56 rad/m for the medium 1, az=9,4 Np/m, B2=1,1 rad/m for the medium 2 and f=1GHZ, T=-0,69 , find the distance at which the magnitude of reflected electric field is equal to (E= 4,9 V/m. Z Er2, Hr2, 02 Et Ei ît îi E" X = 0 V f=1GHZ E'(x = 0)| = 16- mA 14.0-mW helium-neon laser emits a beam of circular cross section with a diameter of 2.85 mm. (a) Find the maximum electric field in the beam. kN/C (b) What total energy is contained in a 1.00-m length of the beam? pJ (c) Find the momentum carried by a 1.00-m length of the beam. kg. m/sA0.5 MHz antenna carried by an airplane flying over the ocean surface generates a wave that approaches the water surface in the forme a normally incident plane wave with an electric-field amplitude of 5500 V/m. Seawater is characterized by a dielectric constant of 72, relative permeabity of 1 and conductivity of 4 Slm. The plane is trying to communicate a message to a submarine submerged at a depth d below the water surface. If the submarine's receiver requires a minimum signal ampitude of 0.03 u Vim), what is the maximum depth d to which successful communication is still possible? Answer