Which of the following reactions occurs at measurable rate ?

The mass of a body is 2.5 kg, and its volume is 250 cm3. Find its relative density:

The desnsity of the atmosphere at sea level is 1.29 kg/m3.. Assume that it does not change with altitude. Then how high would the atmosphere extend?

The workdone in forming a soap film of size&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>10</mn><mi>cm</mi><mo>×</mo><mn>10</mn><mi>cm</mi></math>&nbsp;will be, if the surface tension of soap solution is&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>3</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>2</mn></mrow></msup><mi mathvariant="normal">N</mi><mo>/</mo><mi mathvariant="normal">m</mi></math>

Consider the equations,&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">P</mi><mo>=</mo><munder><mi>Lim</mi><mrow><mo>∆</mo><mi mathvariant="normal">s</mi><mo>→</mo><mn>0</mn></mrow></munder><mfrac><mi mathvariant="normal">F</mi><mrow><mo>∆</mo><mi mathvariant="normal">s</mi></mrow></mfrac></math>&nbsp;and&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">P</mi><mn>1</mn></msub><mo>-</mo><msub><mi mathvariant="normal">P</mi><mn>2</mn></msub><mo>=</mo><mi>ρgz</mi></math>. In an elevator accelerating upward

Calculate&nbsp;the relative density of zinc when its density is&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle displaystyle="true" scriptlevel="0"><mn>7</mn><mrow class="MJX-TeXAtom-ORD"><mi>g</mi></mrow><mrow class="MJX-TeXAtom-ORD"><mo>/</mo></mrow><mrow class="MJX-TeXAtom-ORD"><msup><mrow class="MJX-TeXAtom-ORD"><mi>c</mi><mi>m</mi></mrow><mrow class="MJX-TeXAtom-ORD"><mn>3</mn></mrow></msup></mrow></mstyle></math>.

Which of the following reactions occurs at measurable rate ?

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material