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23 Nov 2019

Consider a sphere of radius R=5.00cm.
(a) What is the density of the sphere if its mass is 2.55kg. in1kg/m 3

(b) Suppose instead that one-half the volume of the sphere has adensity of 2.70x103kg/m 3, 0.125 times the volume of the sphere hasa density of 7.80x103kg/m 3, and 0.375 times the volume of thesphere has a density of 11.3x103kg/m 3, what is average density ofthe sphere? in 2kg/m 3

(c) Let's consider another variation to this problem. Suppose thatone-half the mass of the sphere has a density of 2.70x103kg/m 3,0.125 times the mass of the sphere has a density of 7.80x103kg/m 3,and 0.375 times the mass of the sphere has a density of11.3x103kg/m 3, what is average density of the sphere? in 3kg/m3

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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Solar Sail
A solar sail allows a spacecraft to use radiation pressure for propulsion, similar to the way wind propels a sailboat. The sails of such spacecraft are made out of enormous reflecting panels. The area of the panels is maximized to catch the largest number of incident photons, thus maximizing the momentum transfer from the incident radiation.
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Part A
  
Consider a perfectly reflecting mirror oriented so that solar radiation of intensity is incident upon, and perpendicular to, the reflective surface of the mirror. If the mirror has a surface area, what is the magnitude of the average force due to the radiation pressure of the sunlight on the mirror?
Express your answer in terms of the intensity, the mirror's surface area, and the speed of light.
ANSWER:
 
=
(2IA)/c
Correct
   
To solve the second part of this problem you will need to know the following:
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and
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Part B
  
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Express your answer numerically, to twosignificantfigures, in units of kilograms per metersquared.
ANSWER:
 
mass/area =
Answer not displayed
    
I'm having trouble figuring out how to slovepart B.Thanks!

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