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3 years ago

13

The valency of oxygen is 2

1 answer:

iren2701 [21]3 years ago

5 0

Answer:

Yes the valency of oxygen is 2

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Describe and apply Newton’s Three Laws

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Newton's<span> First </span>Law of Motion<span>: I. Every object in a state of uniform </span>motion<span> tends to remain in that state of </span>motion<span> unless an external force is applied to it. This we recognize as essentially Galileo's concept of inertia, and this is often termed simply the "</span>Law<span> of Inertia".</span>

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3 years ago

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Rzqust [24]

3x + 1 ≤ 1

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3 years ago

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4 years ago

Assuming perfect optics, if the smallest feature you can resolve when observing around 660 nm is of angular size 0.04 arcsec, wh

Dmitriy789 [7]

Answer:

The value is $\theta _2 = 0.08 \ arcsec$

Explanation:

From the question we are told that

The first wavelength is $\lambda_1 = 660 \ nm = 660 *10^{-9 }$

The first angular size is $\theta_1 = 0.04 \ arcsec$

The second wavelength is $\lambda _2 = 1320 \ nm = 1320 *10^{-9 } \ m$

Generally according to Rayleigh Criterion we have that

$\theta= 1.22 * \frac{\lambda }{D}$

given every other thing remains constant we have that

$\theta = k * \lambda$

Here k represented constant so

$k = \frac{\theta }{\lambda}$

=> $\frac{\theta_1}{ \lambda_1} = \frac{\theta_2}{ \lambda_2}$

=> $\frac{\theta_1}{ \theta_2} = \frac{\lambda_1}{ \lambda_2}$

So

$\frac{ 0.04}{ \theta_2} =0.5$

=> $\theta _2 = 0.08 \ arcsec$

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3 years ago

The graph depicts the velocity and times of Elan and Anna during a race.

vovangra [49]

Answer: C

Explanation:

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3 years ago

Read 2 more answers