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2 years ago

Which of Jafar's statements are correct regarding distance and displacement?

1 answer:

5 0

Answer:The distance and magnitude of displacement are sometimes equal." Jafar is correct. The distance traveled and the magnitude of displacement are equal if and only if the path is a straight line in one direction.

Explanation:

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A beam of unpolarized light shines on a stack of five ideal polarizers, set up so that the angles between the polarization axes

ddd [48]

Answer:

$21.75$

Explanation:

$n$ = number of polarizers through which light pass through = 5

$\theta$ = Angle between each pair of adjacent polarizers

$I_{o}$ = Intensity of unpolarized light

$I_{n}$ = Intensity of transmitted beam after passing all polarizers

It is given that

$\frac{I_{n}}{I_{o}}= 0.277$

we know that the intensity of light after passing through "n" polarizers is given as

$I_{n} = (0.5) I_{o} Cos^{2n-2}\theta$

$\frac{I_{n}}{I_{o}} = (0.5) Cos^{2n-2}\theta$

inserting the values

$0.277 = (0.5)Cos^{2(5)-2}\theta$

$0.554 = Cos^{8}\theta$

$Cos\theta = 0.9288$

$\theta = Cos^{-1}(0.9288)$

$\theta = 21.75$

7 0

2 years ago

A child is playing with a spring toy, first stretching and then compressing it.

Reika [66]

Sorry, I’m only in 6th Grade, I don’t know the answer to this question.

5 0

2 years ago

Paula is studying two different animals. Both animals are classified within the same genus, but they are different species. Base

Ksivusya [100]

Answer:c

Explanation:

i think

6 0

2 years ago

Read 2 more answers

You’ve been given the challenge of balancing a uniform, rigid meter-stick with mass M = 95 g on a pivot. Stacked on the 0-cm end

Mariulka [41]

Answer: d = 4750n/3.1+95n

Explanation:

Using the principle of moment to solve the question.

Sum of clockwise moments = sum of anti clockwise moments

Since there are n identical coins with mass 3.1g placed at point 0cm, 1 coin will have mass of 3.1/n grams

Taking moment about the pivot,

Mass 3.1/n grams will move anti-clockwisely while the mass 95g will move in the clockwise direction.

Since its a meter rule (100cm) the distance from the center mass(95g) to the pivot will be 50-d (check attachment for diagram).

To get 'd'

We have 3.1/n × d = 95 × (50-d)

3.1d/n = 4750-95d

3.1d = 4750n-95dn

3.1d+95dn=4750n

d(3.1+95n) = 4750n

d = 4750n/3.1+95n

6 0

2 years ago

Tom and his little sister are enjoying an afternoon at the ice rink. they playfully place their hands together and push against

Westkost [7]

Newton's third law says:
"For every action, there is an equal and opposite reaction. ".

So, the force that Tom does on the sister is equal to force the sister applies on Tom:
 $F_t = F_s$
where the label "t" means "on Tom", while the label "s" means "on the sister".

From Newton's second law, we also know
 $F=ma$
where m is the mass and a the acceleration. so we can rewrite the first equation as
 $m_t a_t = m_s a_s$
And find Tom's acceleration:
 $a_t = \frac{m_s}{m_t} a_s = \frac{15 kg}{61 kg} (2.1 m/s^2) =0.52 m/s^2$

5 0

2 years ago