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3 years ago

1*2+2+1+5 by how much?

Physics

1 answer:

kozerog [31]3 years ago

6 0

Answer:

Explanation:

1*2+2+1+5=10

1x2+2+1+5=10

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The drawing shows four sheets of polarizing material, each with its transmission axis oriented differently. Light that is polari

Brrunno [24]

Answer:

Explanation:

When sheet A is removed

$I_B=32\cos^230=24W/m^2\\\\I_C=24 \cos^260=6W/m^2\\\\I_D=6\cos^230=4.5W/m^2$

When sheet B is removed

$I_A=32\cos^20=32W/m^2\\\\I_C=24 \cos^290=0W/m^2\\\\I_D=0\cos^230=0W/m^2$

When sheet C is removed

$I_A=32\cos^20=32W/m^2\\\\I_D=32 \cos^230=24W/m^2\\\\I_B=24\cos^290=0W/m^2$

When sheet D is removed

$I_A=32\cos^20=32W/m^2\\\\I_B=32\cos^230=24W/m^2\\\\I_C=24\cos^260=6W/m^2$

8 0

4 years ago

Question 5 of 10

Nina [5.8K]

It is D 14 MS. West. Kauehfbfnd

6 0

3 years ago

In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75C as it moves at 0.2 m/s through a

steposvetlana [31]

Answer:

The answer is " $12682.267\ \ \frac{W}{m^2}$ "

Explanation:

Calculating the mass flow rate of fluid:

$m= \rho AV$

$= \rho \frac{\pi}{4} D^2\ V\\\\= 100 \times \frac{\pi}{4} \times (0.0127)^2\times 0.2\\\\=0.0253 \ \frac{kg}{s}\\\\$

Calculating the amount of heat transfer.

$q =m\timesC_p(T_{m,0}-T_{m,i})$

$=0.0253 \times 4000 (75-25)\\\\=0.0253 \times 4000(50)\\\\=0.0253 \times 200,000 \\\\= 5060 \ W$

Calculating the required value for heat flux:

$q"=\frac{q}{A_s}$

$=\frac{q}{\pi DL}\\\\= \frac{5060}{\pi \times 0.0127 \times 10}\\\\= 12682.267 \frac{W}{m^2}\\$

3 0

3 years ago

What is the longest wavelength that can be observed in the third order for a transmission grating having 5200 slits/cm?

Anarel [89]

Answer:

641 nm.

Explanation:

Given that,

A transmission grating has 5200 slits/cm.

We need to find the longest wavelength that can be observed in the third order. Using grating equation as follows :

$d\sin\theta=m\lambda$ ...(1)

d is slit spacing

No fo slit per unit length :

$N={5200}\ slit/cm\\\\=520000\ slits/m$

We know that, N = 1/d

For longest wavelength, θ = 90°

From equation (1)

$\dfrac{\sin\theta}{m\lambda}=\dfrac{1}{d}\\\\520000=\dfrac{\sin(90)}{3\lambda}\\\\\lambda=\dfrac{1}{520000\times 3}\\\\=6.41\times 10^{-7}\ m\\\\=641\ nm$

Hence, the longest wavelength in third order for a transmission grating is 641 nm.

3 0

3 years ago

A student made the claim that a 4 gram paintball fired from a paintball gun at 90 m/s could have about the same kinetic energy a

Fiesta28 [93]

Answer:

I do agree with the student. Because imagene you have a tissue and a stick. And you throw them at the same speed , the stick will go farther because it' s heavier but the tissue would just blow around and not go forward because it is not heavy enought.

Explanation:

Hope this is correct have a terrific day.

5 0

3 years ago