3 years ago

Atoms bond by sharing or transferring electrons in their ______ Shell.

Physics

1 answer:

Eduardwww [97]3 years ago

7 0

The answer is B bc only the valence shell holds electrons

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A rightward force is applied to a box in order to move it across the table at a constant velocity. (Ignore wind resistance).

anzhelika [568]

The forces would be gravity and friction

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3 years ago

WILL MARK BRAINLIEST IF RIGHT & HAS EXPLINATION

Colt1911 [192]

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3 years ago

An underwater scuba diver sees the Sun at an apparent angle of 43.0° above the horizontal. What is the actual elevation angle of

Inessa05 [86]

Answer:

The actual elevation angle is 12.87 degrees

Explanation:

In the attachment you can clearly see the situation. The angle of elevation as seen for the scuba diver is shown in magenta, we conclude that $\theta_2=90-43=47$ .

Using Snell's Law we can write:

$n_1\sin(\theta_1)=n_2\sin(\theta_2)$

$\implies \sin(\theta_1)=\frac{n_2}{n_1}\sin(\theta_2)$ ,

Let's approximate the index of refraction of the air (medium 1 in the picture) to 1.

We thus have:

$\sin(\theta_1)=n_2\sin(\theta_2)=1.333\sin(47)$

$\implies\theta_1=\arcsin[n_2\sin(\theta_2)]=\arcsin[1.333\sin(47)]\approx 77.13$ . Calling $\alpha$ the actual angle of elevation, we get from the picture that $\alpha=90-77.13=12.97$