Consult Multiple-Concert Example 5 to review the concepts on which this problem depends. A light bulb...
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 4 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. (a)s (b)Erms = N/C 수 (c)Eo N/C 수
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...
33. A light bulb emits light uniformly in all directions. If the peak electric field of this light is 16 N/C at a distance of 1.35 m from the bulb, (a) what is the average power radiated by the bulb? (b) What is the peak magnetic field B at that distance?
Question 33 (6 points) 33. A light bulb emits light uniformly in all directions. If the peak electric field of this light is 16 N/C at a distance of 1.35 m from the bulb, (a) what is the average power radiated by the bulb? (b) What is the peak magnetic field B at that distance?
A strong light bulb radiates light in all directions. The average power of the EM waves by this bulb is 1910.0 W. At a distance r = 0.6 m from the bulb, the EM waves spread over a surface area of 4πr2 (a) Calculate the Average Intensity. Keep 1 decimal place. (b) Calculate the Average Energy Density (including both the electric field and the magnetic field). Write the result in terms of 10-5J/m3. Keep 4 decimal places.(c) Calculate the Average (rms) Electric...
A light bulb emits spherical electromagnetic waves uniformly in all directions. Find (a) the intensity, (b) the radiation pressure, and (c) the electric and magnetic field magnitudes at a distance of 3.0 m from the light bulb, assuming that 50 W of electromagnetic radiation is emitted
Problem 3: Intensity from a distant light source (25 points) Consider an isotropic light source that emits EM radiation with wavelength A and power Po. (Isotropic- uniformly in all directions). In addition, consider a detector with area a, facing the source which is a long distance R away. (a) Derive a formula for the amplitude of the electric field at the detector (b) Derive a formula for the number of photons per unit time that strike the detector. What is...
Consult Multiple-Concept Example 8 to see the concepts that are pertinent here. A person's body is producing energy internally due to metabolic processes. If the body loses more energy than metabolic processes are generating, its temperature will drop. If the drop is severe, it can be life-threatening. Suppose a person is unclothed and energy is being lost via radiation from a body surface area of 1.50 m2, which has a temperature of 34 °C and an emissivity of 0.722 Suppose...
PRINTER VERSION « BACK NEXT Chapter 24, Problem 33 A heat lamp emits infrared radiation whose rms electric field is Erms - 3900 N/C. (a) What is the average Intensity of the radiation? (b) The radiation is focused on a person's leg over a circular area of radius 4.4 cm. What is the average power delivered to the leg? (c) The portion of the leg being Irradiated has a mass of 0.32 kg and a specific heat capacity of 3500...