ReviewYou are standing 2.5 m from a 100-W lightbulb. You maywant to review (Pages 893 - 894).Part AIf the pupil of your eye is a circle 5.0 mm in diameter, how much energy enters your eye per second? (Assume that 5.0% of thelightbulb's power is converted to light.)Express your answer using two significant figures.ΑΣφ?E = 1.3 • 10µJSubmitPrevious Answers Request AnswerX. Incorrect; Try Again; 7 attempts remainingPart BRepeat part A for the case of a 1.0-mm-diameter laser beam with a power of 0.60 mW.Express your answer using two significant figures.ΑΣφ1] ?E =HJSubmitRequest Answer

GivenPower of light bulb ,Pbulb=100 WDistance of seperation between bulb and you ,R=2.5 m, this acts…

Part A You are standing 2.5 m from a 100-W lightbulb. You may want to review (Pages 893 - 894). If the pupil of your eye is a circle 5.0 mm in diameter, lightbulb's power is converted to light.) Express your answer using two significant figures. O ) ?

Part A You are standing 2.5 m from a 100-W lightbulb. You may want to review (Pages 893 - 894). If the pupil of your eye is a circle 5.0 mm in diameter, lightbulb's power is converted to light.) Express your answer using two significant figures. O ) ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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You fly 5400 km across the United States on an airliner at 220 m/s . You return two days later traveling at the same speed. You may want to review (Pages 1035 - 1039) . Part A Have you aged more or less than your friends at home? Have you aged more or less than your friends at home? more less Request Answer Part B By how much?
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2.5 Proton beam is used to obtain information about the size and shape of atomic nuclei. If the diameter of nuclei is of the order of 10-15 m, what is the approximate kinetic energy to which protons are to be accelerated? Use relativistic expressions.
Part A Assuming that these spectral lines correspond to the 656.46-nm hydrogen line in the rest frame, estimate the speed V of the center of mass of the binary system. Express your answer in kilometers per second to three significant figures .Part B Determine the mass M of each star. Express your answer in kilograms to one significant figure.
The sun radiates energy at the rate 3.8 × 1026 W. The source of this energy is fusion, a nuclear reaction in which mass is transformed into energy. The mass of the sun is 2.0 × 1030 kg. Part A How much mass does the sun lose each year? Express your answer using two significant figures. AM = 1.3x1017 kg Submit Previous Answers Part B Review | Constants | Periodic Table Correct Correct answer is shown. Your answer 1.32-1017 = 1.32x1017 kg was either rounded differently or used a different number of significant figures than required for this part. What percentage is this of the sun's total mass? Express your answer using two significant figures. ΜΕ ΑΣΦ ? хахь * √x x x X.10" AM-6.6-10-16 Submit Previous Answers Request Answer × Incorrect; Try Again; 5 attempts remaining Part C Estimate the lifetime of the sun. Express your answer using two significant figures. ΑΣΦ t-15150000000 Submit Previous Answers Request Answer ? × Incorrect; Try Again; 5 attempts remaining years %
1. Read and U What information are you given? Mass= m = 0.15 kg Speed of light = c = 300,000,000 m/s = 3 x 108 m/s 2. Plan and Solve What unknown are you trying to calculate? The amount of energy produced = E = ? What formula contains the given quantities and the unknown? E = mc2 Replace each variable with its known variable and known value. E = (0.15 kg)(3.00 x 108 m/s)2 E = 1.35 x 10¹6 kg.m²/s2 = 1.4 x 1016 J 3. Look Back and Check a separate In a nuclear reactor, 1.5 kilograms of plutonium-239 is completely converted to energy. How many joules of energy are produced? nits
Write the detailed solution. Please make sure that your handwritten is readable. Thank you. An older-model car accelerates from 0 to speed v in 15 s. A newer, more powerful sports car of the same mass accelerates from 0 to 3 v in the same time period. Assuming the energy coming from the engine appears only as kinetic energy of the cars, compare the power of the two cars.
For part c), how come we cannot use the relativistic momentum equation where p = mv/(sqrt(1-v^2/c^2))? Since we've already solved for velocity in part b)?
Electrons are accelerated through a potential difference of 950 kV, so that their kinetic energy is 9.50x105 eV. Part B What would the speed be if it were computed from the principles of classical mechanics? Express your answer in meters per second.
Post-Lab Homework Problems. 1. A student is using a track photogate to determine the time it takes her to run 50 meters. She records the following times: Trial Time (seconds) 1 5.420 5.464 3 5.728 4 5.496 5 5.644 6. 5.794 7 5.540 The data she collects has a mean of 5.583714 seconds, with an absolute uncertainty computed to be 0.141074 seconds. Report her 50-meter time as a confidence interval (a) using the mean and the absolute uncertainty given above. Another student measures his 200-meter run time (b) to be 20.7 + 0.3 seconds. Report the relative uncertainty of each student and identify which has the more precise run time.
A proton's speed as it passes point A is 6.00x10* m/s. It follows the trajectory shown in the figure. (Figure 1) Part A You may want to review (Page 687) For help with math skills, you may want to review: What is the proton's speed at point B? Mathematical Expressions Involving Squares Express your answer with the appropriate units. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Capacitor plates. Value Units Submit Request Answer Provide Feedback Figure 30 V 10 V -10 V