7. What is the total energy transported per hour along a narrow cylindrical laser beam 2.30...
What is the total energy transported per hour along a narrow cylindrical laser beam 2.00 mm in diameter, whose E-field has an rms strength of 3.90 × 10 − 2 N/C ?
1. A high energy pulsed laser emits 1.50 nano second-long pulse of average power 1.70 × 10 11 W. The beam is cylindrical with 1.70 mm in radius. Determine the rms value of the B-field? 2. What is the total energy transported per hour along a narrow cylindrical laser beam 1.70 mm in diameter, whose E-field has an rms strength of 2.40×10−22.40×10−2 N/C ?
A 14.8-mW laser puts out a narrow beam 2.10 mm in diameter. Suppose that the beam is in free space. What is the rms value of E in the beam? What is the rms value of B in the beam?
A laser emits a cylindrical beam of light 2.6 mm in diameter. If the average power of the laser is 2.6 mW , what is the rms value of the electric field in the laser beam? (Units for the answer is kV/m)
A 18.8-mW laser puts out a narrow beam 2.10 mm in diameter. Suppose that the beam is in free space. Part A: What is the rms value of E in the beam? Part B: What is the rms value of B in the beam?
A 18.3-mW laser puts out a narrow beam 2.15 mm in diameter. Suppose that the beam is in free space. 1. what is the rms value of E in the beam? 2. What is the rms value of B in the beam?
A laser emits a cylindrical beam of light 2.6 mm in diameter. If the average power of the laser is 2.4 mW, what is the rms value of the electric field in the laser beam? Express your answer using two significant figures.
A laser emits a cylindrical beam of light 2.0 mm in diameter. Part A If the average power of the laser is 2.2 mW , what is the rms value of the electric field in the laser beam? Express your answer using two significant figures. Erms = kV/m
A laser emits a cylindrical beam of light 2.9 mm in diameter. Part A If the average power of the laser is 2.4 mW , what is the rms value of the electric field in the laser beam? Express your answer using two significant figures. Erms = kV/m
Laser Safety A 0.90 mW laser emits a narrow beam of light that enters the eye. (A) How much energy is absorbed by the eye in 0.20 s? (B) The eye focuses this beam to a tiny spot on the retina, perhaps 5.0 μm in diameter. What is the average intensity of light at this spot? (C) Damage to the retina can occur if the average intensity of light exceeds 1.0×10−2W/cm2. By what factor has the intensity of this laser...