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BigorU [14]
3 years ago
7

Unpolarized light with an intensity of 3.10 w/m2 passes through a polarizer whose transmission axis is tilted at an angle of θ=

67.0° clockwise relative to the vertical. unpol_thetacw.gif what is the intensity of the light once it has passed through the polarizer?
Physics
1 answer:
Dovator [93]3 years ago
7 0
.5*3.7 = 1.85 W/m^21.85 W/m^2
hope this helped 
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5 0
4 years ago
Water flows through a 4.0-cm-diameter horizontal pipe at a speed of 1.3 m/s. The pipe then narrows down to a diameter of 2.0 cm.
jasenka [17]

Answer:

P_{1}-P_{2}=12675Pa

Explanation:

From the equation of continuity we know that:

v_{1}A_{1}=v_{2}A_{2}\\Given \\r_{1}=2.0cm\\r_{2}=1.0cm\\v_{1}=1.3m/s\\Density of water p=1000kg/m^{3}\\Now\\A_{1}=\pi r_{1}^{2} \\A_{2}=\pi r_{2}^{2}\\ Therefore\\v_{2}=v_{1}\frac{A_{1}}{A_{2}}\\v_{2}=v_{1}\frac{\pi r_{1}^{2} }{\pi r_{2}^{2}}\\v_{2}=v_{1}\frac{r_{1}^{2} }{r_{2}^{2}}\\v_{2}=1.3*\frac{2.0^{2} }{1.0^{2} } \\v_{2}=5.2m/s\\

From Bernoulli equation we know that:

P_{1}+1/2pv_{1}^{2}+pgy_{1}=P_{2}+1/2pv_{2}^{2}+pgy_{2}\\

Now assuming y_{1}=y_{2}

P_{1}+(1/2)pv_{1}^{2}=P_{2}+(1/2)pv_{2}^{2}\\ P_{1}-P_{2}=1/2pv_{2}^{2} -1/2pv_{1}^{2}\\ P_{1}-P_{2}=1/2p(v_{2}^{2}-v_{1}^{2} )\\ P_{1}-P_{2}=1/2*1000(5.2^{2}-1.3^{2}  )\\ P_{1}-P_{2}=12675Pa

5 0
3 years ago
Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants
umka21 [38]
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7 0
4 years ago
What is the resistance of a 3.1 m length of copper wire 1.7 mm in diameter?
8_murik_8 [283]
Resistance can be obtained by the following formula:

R = <span>ρ (L/A)

where:
R = resistance
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R = (1.68x10^-8) (3.1 / 0.0000022698)
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4 0
3 years ago
When a plant is entering the calvin cycle of photosythesis______.
Korolek [52]
The Calvin cycle<span> refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the </span>Calvin Cycle<span> is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers (ATP and NADPH) are products of light-dependent reactions.

So basically it indirectly needs the light, even it's called light-independant reaction.

So the answer is the last one.</span>
5 0
4 years ago
Read 2 more answers
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