3 years ago

Any wave of any kind will change direction when it encounters an obstacle. This bending is called

Physics

1 answer:

sashaice [31]3 years ago

6 0

Answer:

diffraction is the correct answer

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PLS ANSWER FAST WILL GIVE BRAINLY TIMED TEST

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A=F/m
a=(3000000)/(20000)
a=15 m/s^2

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3 years ago

How long does it take the moon to go from full-moon phase to new-moon phase

Amiraneli [1.4K]

A complete cycle of phases is 29.531 days.
From full-moon to new-moon is half of that.

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3 years ago

Who has the best answer for this

ioda

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electricity because it has more percentage nd energy

Explanation:

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2 years ago

Why reaction force must exist

Fittoniya [83]

Newton's 3rd law:
Every action has an equal and opposite reaction.
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3 years ago

Two children are riding on the edge of a merry-go-round that has a mass of 100.kg and radius of 1.60m and is rotating at 20.0rpm

Gre4nikov [31]

Here since both children and merry go round is our system and there is no torque acting on this system

So we will use angular momentum conservation in this

$I_1\omega_1 = I_2\omega_2$

now here we have

$I_1 = \frac{MR^2}{2} + m_1R^2 + m_2R^2$

$I_1 = \frac{100(1.60)^2}{2} + (22 + 28)(1.60)^2$

$I_1 = 256$

Now when children come to the position of half radius

then we will have

$I_2 = \frac{MR^2}{2} + m_1(\frac{R}{2})^2 + m_2(\frac{R}{2})^2$

$I_2 = \frac{100(1.6)^2}{2} + (28 + 22)(0.8)^2$

$I_2 = 160$

now from above equation we have

$256 (20.0 rpm) = 160(\omega_2)$

$\omega_2 = 32 rpm$

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3 years ago