Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books
" If the illumination from a source of light varies inversely as the square of the distance, how much farther from a candle must a book, which is now 15 inches off, be removed, so as to receive just one-third as much light ? 20. "
University Algebra: Designed for the Use of Schools and Colleges - Page 273
by Webster Wells - 1880 - 475 pages
Full view - About this book

The elements of algebra

James Wood - 1857 - 634 pages
...whose diameter is 8 in. ? (11) Given that the illumination from a source of light varies inverse/i/ as the square of the distance, how much farther from...removed, so as to receive just half as much light? (12) Given that the content of a cylinder varies as its height and the square of its diameter jointly,...
Full view - About this book

New Higher Algebra: An Analytical Course Designed for High Schools ...

Benjamin Greenleaf - Algebra - 1864 - 420 pages
...its diameter, having given that the area of a circle varies as the square of fts diameter. Ans. 10. 8. Given that the illumination from a source of light varies inversely as the square of the distance ; how much farther from a candle must a book, which is now 3 inches off, be removed, so as...
Full view - About this book

The elements of algebra

John William Colenso (bp. of Natal.) - 1878 - 298 pages
...1о.гч-(8.г — Ц) ; -0>0^71 - -11 ; whence 448.1 --200.Г = -33; &c. — l71 .I' -- 1 Ю.Г — о 12. Given that the illumination from a source of light varies inversely as the square of the distance; how much farther from a candle must a speck which is now 8 inches oft' be removed, so as...
Full view - About this book

Algebra

C R. Lupton - 1879 - 194 pages
...to A than to B. Find how much later the second started than the iirst. (6) Solve the equations (7) Given that the illumination from a source of light varies inversely as the square of the distance ; how much farther from a candle must a speck which is now 8 inches off be removed, so as...
Full view - About this book

Wentworth and Hill's Examination Manuals: Algebra, Issue 2

George Albert Wentworth - Algebra - 1884 - 166 pages
...room. Compare the intensities of light at the fourth corner and at the centre of the room, assuming that the illumination from a source of light varies inversely as the square of its distance. 9. Show how to insert any number of harmonic means between two given quantities. If 2p...
Full view - About this book

"Wentworth & Hill's Exercise Manuals: Algebra, Issue 2

George Albert Wentworth - 1889 - 406 pages
...room. Compare the intensities of light at the fourth corner and at the centre of the room, assuming that the illumination from a source of light varies inversely as the square of its distance. 9. Show how to insert any number of harmonic means between two given quantities. If 2p...
Full view - About this book

A Short Course in Higher Algebra: For Academies, High Schools, and Colleges

Webster Wells - Algebra - 1889 - 584 pages
...equivalent to the sum of two pyramids whose bases are 5 and 8, and altitudes 12 and 6, respectively? 12. If the illumination from a source of light varies inversely as the square of the distance, how much farther from a candle must a book, which is now 3 inches off, be removed so as to...
Full view - About this book

College Algebra

Webster Wells - Algebra - 1890 - 560 pages
...are 5 and 12, and radii 6 and 9, respectively ? 19. If the illumination from a source of light varies inversely as the square of the distance, how much farther from a candle must a book, which is now 15 inches off, be removed, so as to receive just one-third as much light ? XXVII. ARITHMETICAL PROGRESSION....
Full view - About this book

College Algebra

Webster Wells - Algebra - 1890 - 604 pages
...to the sum of two cylinders whose altitudes are 5 and 12, and radii 6 and 9, respectively ? 19. If the illumination from a source of light varies inversely as the square of the distance, how much farther from a candle must a book, which is now 15 inches off, be removed, so as...
Full view - About this book

Exercises in Algebra, Parts 1-2

George Albert Wentworth - 1897 - 410 pages
...room. Compare the intensities of light at the fourth corner and at the centre of the room, assuming that the illumination from a source of light varies inversely as the square of its distance. 9. Show how to insert any number of harmonic means between two given quantities. If 2p...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download EPUB
  5. Download PDF