
4. An industrial laser is used to burn a hole through a piece of metal. The...
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is 1.10 x 109 W/m². What is the rms value of the electric field in the electromagnetic wave emitted by the laser? N/C
An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is 1.60 × 10 9 W/m². What is the rms value of the electric field in the electromagnetic wave emitted by the laser?
A neodymium-glass laser emits short pulses of high-intensity
electromagnetic waves. The electric field of such a wave has an rms
value of Erms = 2.0 × 109 N/C. Find the average power of each pulse
that passes through a 1.6 × 10-5-m2 surface that is perpendicular
to the laser beam.
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. The electric field of such a wave has an rms value of E 2.0 x 109 NIC. Find the average...
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. The electric field of such a wave has an rms value of Erms = 2.50 109 N/C. Find the average power of each pulse that passes through a 2.40 10-5 m2 surface that is perpendicular to the beam.
Chapter 24 Electromagnetic Waves 6. A neodymium-glass laser emits short pulses of high-intensity of electromagnetic waves. The electric field of such a laser pulse has an rms value of Ems = 8.0 x 10' N/C. (a) Determine the average power of each pulse that passes through the cross-sectional area of of the laser beam A -5.05 x 10-5 m. (b) Determine the average intensity of this laser in W/m². - 4-
1. Consult Multiple-Concept Example 5 to review the concepts on which this problem depends. A light bulb emits light uniformly in all directions. The average emitted power is 150.0 W. At a distance of 6 m from the bulb, determine (a) the average intensity of the light, (b) the rms value of the electric field, and (c) the peak value of the electric field. 2. On a cloudless day, the sunlight that reaches the surface of the earth has an...
1. (3 points) Consider a beam of light of wavelength 514.5 nm emitted by a laser. The diameter of the beam is 2.00 mm and there are 1.30 X 1018 photons emitted per second. a) Find the peak electric field for the electromagnetic wave that constitutes the beam. b) Find the peak magnetic field for the electromagnetic wave that constitutes the beam. (Hint: Recall the average intensity of electromagnetic waves. Also remember that intensity is power per unit area.)
What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that puts 483 J of energy into a circular spot 2.00 mm in diameter in 4.61 s? Compare this to the average intensity of sunlight (about 700 W/m2). Select the correct answer Your Answe O 3.34 x10'W/m O 3.80 x10W/m2 O 7.72 x10W/m2 O 4.48 x10W/m2
#4 part a,b,c
4. An electromagnetic wave with a frequency of 100,0 MHz, İs traveling direction. Att-0 s, the electric field due to this wave of 300.0 V/m. through a vacuum in x- (i) What is the wavelength of this wave? a. 1.0 m b. 2.0 m c, 3.0 m d. 4.0 m (ii) What is the amplitude of the magnetic field due to this wave? a, 1.0 μΤ b, 2.0 μ T c. 3.0 uT d. 4.0 HT (iii)...
chapter 24 part 4 1. Approximately what is the smallest detail (in nanometers) observable with a microscope that uses light of frequency 0.61×1015 Hz? 2. Lasers can be constructed that produce an extremely high intensity electromagnetic wave for a brief time—called pulsed lasers. They are used to ignite nuclear fusion, for example. Such a laser may produce an electromagnetic wave with a maximum electric field strength of 1.94×1011 V / m for a time of 0.97 ns. What is the intensity of...