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Fill in the blanks: 
d) The relative density of lead is 11.3. Its density is ....g cm–3or ....kg m–3.


11.3

, 11.3 x 103

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Relative space density space equals space fraction numerator Density space of space straight a space substance space over denominator Density space of space water end fraction

Density space of space water space equals space 1 space gm divided by cm cubed space

Density space of space lead space equals space Relative space density space of space lead space cross times space density space of space water

space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 11.3 cross times 1 space equals space 11.3 space straight g divided by cm cubed space

1 space straight g space equals space 1 over 1000 space kg

1 space cm cubed space equals space 10 to the power of negative 6 end exponent space straight m cubed space

1 space straight g divided by cm cubed space equals space 10 to the power of negative 3 end exponent over 10 to the power of negative 6 end exponent space kg divided by straight m cubed space equals space 10 cubed space kg divided by straight m cubed space

therefore space 11.3 space straight g divided by cm cubed space equals space 11.3 space cross times space 10 cubed space kg divided by straight m cubed
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Fill in the blanks by suitable conversion of units 
(a) 1 kg m2s–2= ....g cm2s–2

107

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1 space kg space equals space 10 cubed space straight g space

1 space straight m squared space equals space 10 to the power of 4 space end exponent cm squared space

1 space kg space straight m squared space straight s to the power of negative 2 end exponent space equals space 1 space kg cross times space 1 space straight m squared space cross times 1 space straight s to the power of negative 2 end exponent space

space space space space space space space space space space space space space space space space space space space space space space equals space space space space 10 cubed space straight g space cross times space 10 to the power of 4 space cm squared space cross times space 1 space straight s to the power of negative 2 end exponent space
space space space space space space space space space space space space space space space space space space space space space space space
space space space space space space space space space space space space space space space space space space space space space equals space 10 to the power of 7 space end exponent gcm squared straight s to the power of negative 2 end exponent
91 Views

Fill in the blanks by suitable conversion of unit:
b) 1 m = ..... ly 

 1.057 x 10-16
102 Views

Fill in the blanks by suitable conversion of units:
c) 3.0 m s–2= .... km h –1

3.88 x 10-4 km h-2

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1 space straight m space equals space 10 to the power of negative 3 end exponent space km

1 space straight s space equals space fraction numerator 1 over denominator 3600 space end fraction space straight h space rightwards double arrow space 1 space straight s to the power of negative 1 end exponent space equals space 3600 space straight h to the power of negative 1 end exponent space
1 space straight s to the power of negative 2 end exponent space equals left parenthesis 3600 right parenthesis squared space straight h to the power of negative 2 end exponent

therefore space 3 space straight m space straight s to the power of negative 2 end exponent space equals left parenthesis 3 cross times 10 to the power of negative 3 end exponent space km right parenthesis space cross times left parenthesis 3600 right parenthesis squared space straight h to the power of negative 2 end exponent space

space space space space space space space space space space space space space space space space space space space equals space 3.88 space cross times space 10 to the power of negative 4 end exponent space km space straight h to the power of negative 2 end exponent
97 Views

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Fill in the blanks by suitable conversion of units:
d) ) G = 6.67 × 10–11N m2(kg)–2= .... (cm) 3s –2g–1


6.67 x 10-8 cms-2 g-1
97 Views

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