Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Chapter 6, Problem 16P
To determine
Whether the laser outputs a huge amount of energy or not.
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Chapter 6 Solutions
Physics for Scientists and Engineers, Vol. 1
Ch. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Prob. 10P
Ch. 6 - Prob. 11PCh. 6 - Prob. 12PCh. 6 - Prob. 13PCh. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 18PCh. 6 - Prob. 19PCh. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Prob. 22PCh. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Prob. 25PCh. 6 - Prob. 26PCh. 6 - Prob. 27PCh. 6 - Prob. 28PCh. 6 - Prob. 29PCh. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - Prob. 36PCh. 6 - Prob. 37PCh. 6 - Prob. 38PCh. 6 - Prob. 39PCh. 6 - Prob. 40PCh. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - Prob. 43PCh. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - Prob. 48PCh. 6 - Prob. 49PCh. 6 - Prob. 50PCh. 6 - Prob. 51PCh. 6 - Prob. 52PCh. 6 - Prob. 53PCh. 6 - Prob. 54PCh. 6 - Prob. 55PCh. 6 - Prob. 56PCh. 6 - Prob. 57PCh. 6 - Prob. 58PCh. 6 - Prob. 59PCh. 6 - Prob. 60PCh. 6 - Prob. 61PCh. 6 - Prob. 62PCh. 6 - Prob. 63PCh. 6 - Prob. 64PCh. 6 - Prob. 65PCh. 6 - Prob. 66PCh. 6 - Prob. 67PCh. 6 - Prob. 68PCh. 6 - Prob. 69PCh. 6 - Prob. 70PCh. 6 - Prob. 71PCh. 6 - Prob. 72PCh. 6 - Prob. 73PCh. 6 - Prob. 74P
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- A typical incandescent reading lamp runs at 60W. If it is left on constantly, a) how much energy (in MJ) is consumed per day, and b) what is the weekly cost (in $) if energy is charged at a rate of 12.5 cents per kilowatthour? Write your answer in two (2) decimal placesarrow_forward(a) What is the available energy content, in joules, of a battery that operates a 1.3 W electric clock for 21 months? 70,761,600 × J (b)How long (in years) can a battery that can supply 7.4 ×104 J run a pocket calculator that consumes energy at the rate of 1.6 ×103 W? years Aarrow_forwardIn a particular city, electrical energy costs $0.13 per kilowatt-hour. (Round your answers, in dollars, to at least two decimal places.) (a) How much does it cost to operate an old-style incandescent 40.0-W light bulb continuously for 24 hours? How is power related to energy? Be sure to find an energy in units of kilowatt-hours. Then, use it along with the cost rate in dollars per kilowatt-hour to find a cost in dollars. (b) A modern LED light bulb that emits as much visible light as a 40.0-W incandescent only draws 4.50 W of power. How much does it cost to operate this bulb for 24 hours? $ (c) A particular electric oven requires a potential difference of 220 V and draws 20.0 A of current when operating. How much does it cost to operate the oven for 4.80 hours? 2$ Need Help? Read Itarrow_forward
- What is the efficiency of an electric generator that produces 1.75 kwh per kg of coal burned. The heat of combustion of coal is 6.71 x 10 to the 6 power j / kgarrow_forwardProblem 2 - whose efficiency is 0.034. (a) Suppose that we provide 400000 J of energy in an hour to produce 45 Wh of electric energy in a power plant (pp) that uses coal. Calculate the efficiency of the power plant. (b) Suppose that the transmission lines that use to transmit electric energy to the houses looses 8 % of the electric energy on the way to houses. What is the efficiency transmission lines (2.) ? (c) Calculate the total eficiency of the electric system from power plant upto incandescent light bulb. (d) Suppose that for such system, 100W of energy is supplied, how much energy will be lost? Suppose that the incandescent light bulb is used for lightingarrow_forwardPracticearrow_forward
- The resistance of an exercise bike is often provided by a generator. The energy expended by the rideris used to generate electricity, which is then dissipated. Rather than dissipate the energy, it could be usedfor something useful. A typical person can maintain a steady output of 400W on an exercise bike.Assuming an efficiency of 80% for the generator, and 25-30% for the human body, what amount of usefulpower could be produced by a single rider?How many people would need to ride at the gym to produce 400W to power a TV?arrow_forwardA typical desktop personal computer uses around 100 W of power when carrying out intensive processing, such as running a video game. If you play such a game for 90 minutes, how much energy (in joules) will it use?arrow_forwardA school is paying $0.12/kWh for electric power. To reduce its power bill,the school installs a wind turbine with a rated power of 30 kW.If the turbine operates 2200 hours per year at the rated power, determinethe amount of electric power generated by the wind turbine and the moneysaved by the school per year.arrow_forward
- 1. Two persons were practicing social distancing to alleviate the spread of COVID-19. Social distancing requires a minimum of 3 feet distance from person to person. However, due to their eagerness to share some rumors, the two persons decided to approach each other and now within the intimate distance (12 inches). If person A weighs 60 kg. and person B weighs 68 kg, determine the work done for this act. Take G = 6.67408 x 10-11 m³ kg¬'s-2. A. 6.8076 ergs B. 8.0766 ergs C. 5.9559 ergs D. 5.5599 ergs 2. Find the moment of mass from the x-axis for y = x In(x) – 3x and y = 1 bounded by x = 3 and x = 6. The surface density is equal to 0.37 kg/units'. A. 24.0793 kg. В. -38.6209 kg C. 27.8043 kg. D. -36.8902 kg. 3. In 2019, SCUBA divers from Mexico explores the Atlantic Ocean (64 lb/ft) and finds a circular clock thought to be the ancient remnants of the legendary Atlantis. If the clock measures 1.3 ft. in diameter and depth is measured to be 1250 ft. from the surface to the center of this…arrow_forwardWhy is the answer not approx 0.58 kWh as P = (0.2)(120) = 24 W = 0.024 kW and if E = P*t then E = 0.024 kW * 24 h = 0.58 kWh? Is this not the correct answer? The solution above multiples 24 by 60? Why?arrow_forwardIf a CD player uses electricity at a rate of 18 W, how much energy does it use during an 9 hour day?arrow_forward
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