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Stels [109]
3 years ago
9

check the state of polarization of the room lights by looking at the room lights through one of the polarizers and rotating it t

hrough 360. Do you observe any signigicant variation in the intensity of the light transmitted through the polarizer
Physics
1 answer:
maria [59]3 years ago
4 0

Answer:

No, there wasn't any variation in the light intensity at 360 degrees.

During the rotation, rotating through an angle of 90° gradually brought the intensity to a maximum. Rotating by another 90° degrees brought the intensity to a minimum at some point. Rotating by another 90° brought it back to its maximum and then another 90° brought it to its initial intensity.

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The electric field between the plates of a parallel-plate capacitor is horizontal, uniform, and has a magnitude E. Asmall object
kirza4 [7]

Answer:

m = 0.041 kg

Explanation:

As we know that the small particle is in equilibrium at an angle of 16 degree with the vertical

so here we can use force balance in vertical and horizontal direction

T cos\theta = mg

T sin\theta = qE

now from above equation we have

T = \sqrt{(mg)^2 + (qE)^2}

also by division of above two equations we have

\frac{qE}{mg} = tan\theta

qE = mg tan\theta

now from above equation again

T = \sqrt{(mg)^2 + (mg)^2 tan^2\theta}

T = mg sec\theta

0.420 = m(9.81) sec 16

m = 0.041 kg

3 0
3 years ago
PLEASE HELP ASAP
Volgvan

(a) Frequency of sound wave is inversely proportional to string length.

(b) Pitch of a sound depends on the frequency while loudness depends on the amplitude of sound.

<h3>Relationship between string length and frequency</h3>

The relationship between string length and frequency is given as;

λ = 2L

where;

  • λ is wavelength
  • L is length of the string

v = fλ

f = v/λ

f = v/2L

Thus, frequency of sound wave is inversely proportional to string length.

<h3>Relationship between pitch and loudness of sound</h3>

The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.

Learn more about pitch and loudness here: brainly.com/question/61859

3 0
2 years ago
Calculate the difference in blood pressure between the feet and top of the head for a person who is 1.70 m tall.
cupoosta [38]

Answer:

P_2 - P_1 = 1.8 * 10^4\ Pa

Explanation:

Given

Height (h) = 1.70m

Required

Determine the difference in the blood pressure from feet to top

This is calculated using Pascal's second law.

The second law is represented as:

P_2 = P_1 + pgd

Subtract P1 from both sides

P_2 - P_1 = pgd

Where

p = blood\ density = 1.06 * 10^3kg/m^3

g = acceleration\ of\ gravity = 9.8N/kg

d =height = 1.70m

P2 - P1 = Blood Pressure Difference

So, the expression becomes:

P_2 - P_1 = 1.06 * 10^3 * 9.8 * 1.70

P_2 - P_1 = 17659.6Pa

P_2 - P_1 = 1.8 * 10^4\ Pa

Hence, the difference in blood pressure is approximately 1.8 * 10^4\ Pa

3 0
3 years ago
What is a precipitate?
Lunna [17]
Rain is considered a precipitate. Along with: drizzle, sleet, snow and hail.

hope this helps :)

7 0
4 years ago
Read 2 more answers
Improvements in muscular strength will not affect muscular endurance.
olga2289 [7]

Answer:

the answer for your question is false ( F )

6 0
3 years ago
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