Question

please give answer of this ​

Answer 1

Answer:

2728+82828

72828-8282

=282882

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Answer 2

Answer:

Answer

Data: d

1

=10cm=0.1m,v

1

=2m/s,v

2

=4m/s

By the equation of continuity, the ratio of the speed is

v

2

v

1

=

A

1

A

2

=(

d

1

d

2

)

2

∴

d

1

d

2

=

v

2

v

1

=

4

2

=

2

1

=0.707

∴d

2

=0.707d

1

=0.707(0.1m)=0.0707m