2 years ago

Everyone can be hypnotized?

Physics

1 answer:

MAXImum [283]2 years ago

8 0

Answer:

false

Explanation:

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A helicopter is ascending vertically. a passenger accidentally drops her wallet out the sides of the helicopter when it is 160 m

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Answer:

(E)56.0 m/s

Explanation:

Height =h=-160 m

Because the wallet moving in downward direction

Time=t=7 s

Final speed of wallet=v=0

We have to find the speed of helicopter ascending at the moment when the passenger let go of the wallet.

$v^2-u^2=2gh$

Where $g=9.8 m/s^2$

Substitute the values

$0-u^2=2(-160)\times 9.8$

$u^2=3136$

$u=\sqrt{3136}=56m/s$

Option (E) is true

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Explanation:

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Given:

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F1 × r1 = F2 × r2

F2 = (F1 × r1^2)/(0.5 × r1)^2

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Answer:

Person B

Explanation:

Person B will hear the frequency that is lower than the B- flat.

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