Zigya Logo

Chapter Chosen

Motion in A Plane

Book Chosen

Physics Part I

Subject Chosen

Physics

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

Find the angle between the vectors straight A with rightwards arrow on top equals straight A subscript straight x straight i with overparenthesis on top plus straight A subscript straight y straight j with hat on top plus straight A subscript straight z straight k with hat on top and straight B with rightwards arrow on top equals straight B subscript straight x straight i with hat on top plus straight B subscript straight y straight j with hat on top plus straight B subscript straight z straight k with hat on top.


Let straight theta be the angle between the given two vectors.

Thus, 
                         cos space straight theta space equals space fraction numerator straight A with rightwards arrow on top times straight B with rightwards arrow on top over denominator AB end fraction

Here,                      straight A equals square root of straight A subscript straight x squared plus straight A subscript straight y squared plus straight A subscript straight z squared end root

                               straight B equals square root of straight B subscript straight x squared plus straight B subscript straight y squared plus straight B subscript straight z squared end root

and           <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
#1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493)
#2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs()
#3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...')
#4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array)
#5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array)
#6 {main}</pre>

∴      straight theta equals cos to the power of negative 1 end exponent open parentheses fraction numerator straight A subscript straight x straight B subscript straight x plus straight A subscript straight y straight B subscript straight y plus straight A subscript straight z straight B subscript straight z over denominator square root of straight A subscript straight x squared plus straight A subscript straight y squared plus straight A subscript straight z squared end root space square root of straight B subscript straight x squared plus straight B subscript straight y squared plus straight B subscript straight z squared end root end fraction close parentheses, is the angle between the vectors. 

168 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

Give three examples of scalar quantities.

Mass, temperature and energy
769 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


814 Views