3 years ago

PLEASE HELP!!!!!!!!!!!!!!

1 answer:

5 0

27 cubic feet.

You can get this because the surface area formula shows that each edge is 3ft. the area would be length x width x height, which are all 3.

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8b + 4 - 4b + 2 = <br><br> A) 12b + 6 <br> B) 4b^2 2 + 4 + 2 <br> C) 12bb + 6 <br> D) 4b + 6

trapecia [35]

<h2>Answer:</h2><h2>D. 4b + 6</h2><h2 /><h2>Hope this helps!!</h2>

5 0

3 years ago

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At what angle does a diffraction grating produce a second-order maximum for light having a first-order maximum at 20.0 degrees?

hichkok12 [17]

Answer:

At 43.2°.

Step-by-step explanation:

To find the angle we need to use the following equation:

$d*sin(\theta) = m\lambda$

Where:

d: is the separation of the grating

m: is the order of the maximum

λ: is the wavelength

θ: is the angle

At the first-order maximum (m=1) at 20.0 degrees we have:

$\frac{\lambda}{d} = \frac{sin(\theta)}{m} = \frac{sin(20.0)}{1} = 0.342$

Now, to produce a second-order maximum (m=2) the angle must be:

$sin(\theta) = \frac{\lambda}{d}*m$

$\theta = arcsin(\frac{\lambda}{d}*m) = arcsin(0.342*2) = 43.2 ^{\circ}$

Therefore, the diffraction grating will produce a second-order maximum for the light at 43.2°.

I hope it helps you!

6 0

3 years ago

it takes 8 labours 6days to complete a certain job.how many labours would complete the job in 15 days.

VashaNatasha [74]

Answer:

Step-by-step explanation:

Required man days to complete the job = 8 * 6

= 48 Man Days

Required labors to complete the job by 15 days = 48/15

= 3.2

It means, it is required 4 labors can complete the certain work by 15 days

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3 years ago

I NEED HELP WITH A PROBLEM

postnew [5]

Answer:

the first one I guess

Step-by-step explanation:

6 0

3 years ago

The product of 57 lies between which two whole numbers?

Zanzabum

It lies between the numbers 7 & 8

5 0

3 years ago

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