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3 years ago

14

A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the same direction has a speed of

1 answer:

Vika [28.1K]3 years ago

4 0

Answer:

6m/s

Explanation:

The mosquito will have a speed of 6 m/s.

if the speed of the mosquito and breeze was in opposite direction, we will subtracted them from each other and the result will be the speed of mosquito moving in the direction of the higher speed (between the breeze and mosquito). while if they are both moving in the same direction the speed of the mosquito will be the sum of both the speed of the mosquito and breeze thus the mosquito and breeze are moving in the same direction so we just sum it up (3m/s + 3m/s = 6m/s).

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marta [7]

Answer

given,

initial speed of merry-go-round = 0 rad/s

final speed of merry-go-round = 1.5 rad/s

time = 7 s

Radius of the disk = 6 m

Mass of the merry-go-round = 25000 Kg

Moment of inertia of the disk

$I = \dfrac{1}{2}MR^2$

$I = \dfrac{1}{2}\times 25000\times 6^2$

I = 450000 kg.m²

angular acceleration

$\alpha = \dfrac{\omega_f-\omega_0}{t}$

$\alpha = \dfrac{1.5-0}{7}$

$\alpha =0.214\ rad/s^2$

we know,

$\tau= I \alpha$

$\tau= 450000\times 0.214$

$\tau=96300\ N.m$

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3 years ago

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Ugo [173]

Answer:

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Explanation:

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E1 represents excited state in which only a few particle reaches

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Thus, the number of particles in state E0 over the number of particles in state E1 will reduce.

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babunello [35]

Answer:

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