Question

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Answer 1

From the question, we have;

• A athlete moves along the circumference of two circles named as PQRSTUVP
• He takes 44 seconds to complete one round
• We need to find his speed

Now, for finding speed we need distance travelled & time taken, for distance we know that it is basically the sum of circumferences 0f the both the circles, i.e;

• Circumference of RSTU + Circumference of PQRV
• 2πr + 2πr
• 2 × 3.14 × 3 + 2 × 3.14 × 2
• 6 × 3.14 + 4 × 3.14
• 18.84 + 12.56
• 31.4 m

Finally,

• Speed = Distance travelled/Time taken

= 31.4/44

= 314/440

= 0.71 m/s ( 0.7 approx )

Therefore, the speed of the athlete is 0.71/0.7 m/s.

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Answer 2

Answer:

Glyptal is polymer which is made by monomers

ethlene glycol and pthalic acid

cellulose is not soluble in water rather than in organoc solvent

Hello miss

may I have your intro plz...