Q117 of 140 Page 196

(a) Science Application: The king cobra can reach a length of 558 cm. This is only about 60 per cent of the length of the largest reticulated python. Find the length of the largest reticulated python.


(b) Physical Science Application: Unequal masses will not balance on a fulcrum if they are at equal distance from it; one side will go up and the other side will go down.


Unequal masses will balance when the following proportion is true:




Two children can be balanced on a seesaw when


. The child on the left and child on the right are balanced. What is the mass of the child on the right?



(c) Life Science Application


A DNA model was built using the scale 2 cm : 0.0000001 mm. If the model of the DNA chain is 17 cm long, what is the length of the actual chain?


a) ⇒ Length of the King cobra = 558cm


⇒ 60% of length of reticulated python = 558cm


⇒ × Length of retuiculated phython = 558cm


∴ Length of reticulated python = 558 × = 930cm


b) Given, =


⇒ Mass1 = 24 kg, length1 = 3m and length2 = 2m


⇒ =


⇒ Mass2 = 36kg


c) ⇒ Length of the chain be xmm


∴ =


⇒ x =


⇒ X = 0.00000085


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Find


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