A light bulb radiates 90 W uniformly in all directions. (a) Find the intensity at a distance
Question:
A light bulb radiates 90 W uniformly in all directions.
(a) Find the intensity at a distance of 1.5 m.
(b) If the wavelength is 650 nm, find the number of photons per second that strike a surface of area 1 cm2 oriented so that the line to the bulb is perpendicular to the surface.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 57% (14 reviews)
a I P A I P 4 R 2 I 90...View the full answer
Answered By
Carly Cimino
As a tutor, my focus is to help communicate and break down difficult concepts in a way that allows students greater accessibility and comprehension to their course material. I love helping others develop a sense of personal confidence and curiosity, and I'm looking forward to the chance to interact and work with you professionally and better your academic grades.
4.30+
12+ Reviews
21+ Question Solved
Related Book For
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
Question Posted:
Students also viewed these Modern Physics questions
-
A point source emits light energy uniformly in all directions at an average rate Po with a single frequency f. Show that the peak electric field in the wave is given by HucP 2ar? E, %3D
-
A sound wave travels out uniformly in all directions from a point source. (a) Justify the following expression for the displacement s of the transmitting medium at any distance r from the source: s =...
-
The suns intensity at the distance of the earth is 1370 W/m 2 . 30% of this energy is reflected by water and clouds; 70% is absorbed. What would be the earths average temperature (in C) if the earth...
-
Evaluate the expression for the given value(s) of the variable(s). 4x - 7, x = 5/2
-
Corporate Printing Company currently leases its only copy machine for $1,500 a month. The company is considering replacing this leasing agreement with a new contract that is entirely commission...
-
It is July 30, 2015. The cheapest-to-deliver bond in a September 2015 Treasury bond futures contract is a 13% coupon bond, and delivery is expected to be made on September 30, 2015. Coupon payments...
-
Apex Electrical Supply, Inc., purchased inventory for \($2,000\) and also paid \($125\) freight to have the inventory delivered. Apex Electrical Supply, Inc., returned \($500\) of the goods to the...
-
Table gives hypothetical export price indexes and import price indexes (1990 100) for Japan, Canada, and Ireland. Compute the commodity terms of trade for each country for the period 19902006. Which...
-
In response to the COVID-19 pandemic, many temporary policies were introduced to encourage telemedicine use. Which one do you choose to be made permanent any why?
-
The Budda-Bing Manufacturing Company Preparing Pro Forma Financial Statements for 2019 Budda-Bing Manufacturing is planning to implement a major plant-modernization program to improve its competitive...
-
The diameter of the pupil of the eye under room-light conditions is about 5 mm. (It can vary from about 1 to 8 mm.) Find the intensity of light of wavelength 600 nm such that 1 photon per second...
-
When light of wavelength 1 is incident on the cathode of a photoelectric tube, the maximum kinetic energy of the emitted electrons is 1.8 eV. If the wavelength is reduced to 1/2, the maximum kinetic...
-
Match the following columns: 1. Payments of income taxes and accrued expenses 2. Issuance of equity securities 3. Redemption of debentures and loan repayments 4. Sale of equity instruments and...
-
A IRS auditor randomly selects 3 tax returns from 58 returns of which 6 contain errors. What is the probability that she selects none of those containing errors? No replacement.
-
Current Attempt in Progress Linda Bonita established Bonita Ltd. in mid-2022 as the sole shareholder. The accounts on June 30, 2023, the company's year end, just prior to preparing the required...
-
Calculate the total asset turnover if a company has net sales of $ 7 5 , 0 0 0 , cost of goods sold of $ 3 0 , 0 0 0 , and average total assets of $ 1 5 0 , 0 0 0
-
If I have a financial decision to buy a Tesla car, what are the values/calculations for variables such as PV, FV, CF (PMT), N, and I? What would be the opportunity cost? Is this fixed or could it...
-
Solve the inequality. - 217 5x12
-
How do managers make decisions to implement strategy?
-
Consider the function f and its graph. a. Estimate the zeros of the area function b. Estimate the points (if any) at which A has a local maximum or minimum. c. Sketch a graph of A, for 0 x 10,...
-
Why do we need to consider the surroundings of a system when applying the second law of thermodynamics?
-
A New Musical Instrument. You have designed a new musical instrument of very simple construction. Your design consists of a metal tube with length L and diameter L/10. You have stretched a string of...
-
An organ pipe has two successive harmonics with frequencies 1372 and 1764 Hz. (a) Is this an open or a stopped pipe? Explain. (b) What two harmonics are these? (c) What is the length of the pipe?
-
Longitudinal Standing Waves in a Solid Longitudinal standing waves can be produced in a solid rod by holding it at some point between the fingers of one hand and stroking it with the other band. The...
-
Topic: Gene Regulation in Prokaryotes and Genetic Recombination Instructions: 1. Find an article (from anywhere) that has to do with the topic. 2. Compose a short summary of the article and why you...
-
Instructions: Sun Sports Inc. has several kiosks in large and medium-sized shopping centers that They sell various styles of sports hats for men and women, all at the same price. In addition to the...
-
solve log(230x) - log(25) = log(212)
Study smarter with the SolutionInn App