Answered: The average intensity a distance d₁ =… | bartleby

Related questions

Question

The average intensity a distance d₁ = 1.6 m from an omni-directional light bulb is ₁ = 1.3 W/m².
(a) Write a symbolic expression for the intensity a distance d₂ = 2.5 m from the same bulb,
in terms of ₁, d₁ and d₂, and calculate its numeric value.
d₁
I₂
11
= 0.533
41.82
(b) Calculate the maximum output power of the light bulb.
Pmax
W/m²
W
(Don't worry about the font -- use 1₁ for 1.)

Expert Solution

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

I ran track in high school. Sometimes spectators would time the races from the stands. Let's say that the spectator is a distance, d, from the starter. The spectator (erroneously) starts their timer when they hear the sound from the starting gun. They should start the timer when they see the smoke from the starting gun.Who can calculate the timing error Δt in terms of d, the speed of sound (vs) and the speed of light (c)? I calculated 6.7 x 10^-7, with speed of sound = 343 m/s and speed of light = c. I just wanted to confirm if I was correct. I used x = x0 + 1/2 (v0 +v)(t).
12.20 Show that the Fourier series for |sinθ| in the range –π < 0 < π is given by M8 Σ | sin 0| m=1 1 = 4m2 2 By setting 0 = 0 and 0 = π /2, deduce values for 1 π 4 π ∞0 and m=1 cos 2mθ 4m2 – 1 ∞o Σ m=1 1 16m2 – 1
Two tubes of gas are identical and are open only at one end. One tube contains neon (Ne) and the other krypton (Kr). Both are monatomic gases, have the same temperature, and may be assumed to be ideal gases. The fundamental frequency of the tube containing neon is 475 Hz. What is the fundamental frequency of the tube containing krypton? The atomic masses are given by 20.180 u for neon, and 83.80 u for krypton. Number i Units
The impedance of a material is Z=pc, the density times the speed of sound. Consider the following information: Zlung-0.18x106kg s/m². Zfat 1.34×10 kg s/m². What fraction of the incident intensity of a sound pulse will be reflected when sound travels from fat into lung?
Im clueless
The ionosphere is the ionized part of the upper layer of the earth's atmosphere. The air molecules there are ionized by solar radiation. This layer of the atmosphere is a fairly good conductor, and radio waves are often "bounced" off the bottom of the ionosphere back toward the earth, in a process called skip or skywave propagation. Due to these properties, the space between the surface of the earth and the bottom of the ionosphere acts like a closed wave guide that will exhibit resonance for very low frequencies. Resonance excitations in the cavity are caused by lightning strikes, which hit the earth about 50 to 100 times a second. These low atmospheric resonance frequencies are known as Schumann resonances, named after the physicist Winfried Otto Schumann, who first calculated them in 1952. There are several Schumann frequencies that occur in the low frequency background, which ranges from 3 to 60 Hz. The highest intensity resonance mode (called the fundamental) occurs at 7.83 Hz.…
5.111 A 10 GHz plane wave travelling in free space has amplitude of 15 V/m. The propagation coefficient B is (a) 209.4 rad/m (c) 543.5 rad/m (b) 173.6 rad/m (d) 3.97 x 10-2 rad/m
The rainbow of visible colors in the electromagnetic spectrum varies continuously from the longest wavelengths (the reddest colors) to the shortest wavelengths (the deepest violet colors) our eyes can detect. Wavelengths near 655 nm are perceived as red. Those near 515 nm are green and those near 475 nm are blue. Calculate the frequency of light (in Hz) with a wavelength of 655 nm, 515 nm, and 475 nm. HINT (a) 655 nm Hz (b) 515 nm Hz (c) 475 nm Hz
The ionosphere is the ionized part of the upper layer of the earth's atmosphere. The air molecules there are ionized by solar radiation. This layer of the atmosphere is a fairly good conductor, and radio waves are often "bounced" off the bottom of the ionosphere back toward the earth, in a process called skip or skywave propagation. Due to these properties, the space between the surface of the earth and the bottom of the ionosphere acts like a closed wave guide that will exhibit resonance for very low frequencies. Resonance excitations in the cavity are caused by lightning strikes, which hit the earth about 50 to 100 times a second. These low atmospheric resonance frequencies are known as Schumann resonances, named after the physicist Winfried Otto Schumann, who first calculated them in 1952. There are several Schumann frequencies that occur in the low frequency background, which ranges from 3 to 60 Hz. The highest intensity resonance mode (called the fundamental) occurs at 7.83 Hz.…
Use dimensional analysis to find how the speed vvv of a wave on a string of circular cross section depends on the tension in the string, T, the radius of the string, R, and its mass per volume, ρ (rho). Express your answer in terms of the variables T, R, and ρ(rho).
An interface is formed between a block of aluminium (with an acoustic impedance of 1.8 x 107 kg m2 s') and a block of copper (with an acoustic impedance of 4.6 x 107 kg m-2 s-1). Longitudinal sound waves travelling through the aluminium are normally incident on the boundary, and are partially reflected. a) What is the ratio of the amplitude of the reflected wave to that of the incident wave? Number b) What is the ratio of the amplitude of the transmitted wave to that of the incident wave? Number c) What percentage of the incident power is transmitted? Number d) What percentage of the incident power is reflected? Number % Ouit P Sove Questi
Please help with this Qs

SEE MORE QUESTIONS