Question

two spheres whose radii are in the ratio of 1 : 2 hour moving with a velocity in the ratio of 3 : 4 if their density are in the ratio 3 : 2 the ratio of their Kinetic energies is,

1)27:64
2)1:1
3)27:256
4)9:64​

Answer 1

Answer:

3)27:256

Explanation:

E1/E2 = m1v1²  /m2v2² = 9m1/16m2 = 27r1³ /32r2³ = = 27 /32x8 = 25 /256

→ choose ans. 3)27:256

Answer 2

Answer:

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