Question

a boy is in a swimming pool with index n2=v2. Knowing that the smallest index is 2, find the limiting angle of refraction

276

likes
1382 views

Answer to a math question a boy is in a swimming pool with index n2=v2. Knowing that the smallest index is 2, find the limiting angle of refraction

Expert avatar
Gerhard
4.5
92 Answers
Para encontrar o ângulo limite de refração, podemos usar a Lei de Snell, que relaciona os ângulos de incidência e refração aos índices de refração dos dois meios envolvidos: n_1\vezes\sin\theta_1=n_2\vezes\sin\theta_2 Dado que n_2=\sqrt{2} queremos encontrar o ângulo limite de refração à medida que o índice de refração aumenta de \sqrt{2} para um valor mais alto. Neste caso, à medida que o índice de refração aumenta, o ângulo de refração \teta_2 ​ se aproximará de 90 graus. Este ângulo é o ângulo crítico, que é o ângulo limite de refração quando a luz passa de um meio com índice de refração mais alto para outro com índice de refração mais baixo. Além deste ângulo crítico, a luz sofre reflexão interna total. Então, o ângulo limite de refração é \theta_2=90

Frequently asked questions (FAQs)
Math Question: Find the absolute extrema of the function f(x) = x^3 - 3x^2 + 2x on the interval [-2,2].
+
Find the limit of (3x-2)/(x^2+4x+3) as x approaches -1.
+
What is the unit vector that represents the direction of a vector with components (3, -4)?
+
New questions in Mathematics
Find an arc length parameterization of the curve that has the same orientation as the given curve and for which the reference point corresponds to t=0. Use an arc length s as a parameter. r(t) = 3(e^t) cos (t)i + 3(e^t)sin(t)j; 0<=t<=(3.14/2)
2(2+2x)=12
A circular park has a diameter of 150ft. A circular fence is to be placed on the edge of this park. Calculate the cost of fencing this park if the rate charged is $7 per foot. Use π = 3.14.
I need .23 turned into a fraction
The bus one way of the road which is 10km is heading with speed of 20km/h ,then the bus the other 10km is heading with speed of 60km/h. The middle speed of the road is it equal with arithmetic speed of the v1 and v2 ?
A National Solidarity Bond offers A 5 year bond offering a gross return of 15% Calculate the AER for this investment. (Give your answer to two decimal places, no need for the percent or € sign in your answer)
Find the equation of the line perpendicular to −5𝑥−3𝑦+5=0 passing through the point (0,−2)
The equation of the straight line that passes through the coordinate point (2,5) and is parallel to the straight line with equation x 2y 9 = 0 is
Lim x → 0 (2x ^ 3 - 10x ^ 7) / 5 * x ^ 3 - 4x )=2
A company made 150,000 in the first year 145,000 in the second 140,000 in the third year successively during the first decade of this company's existence it made a total of
2x2
We plan to test whether the mean mRNA expression level differs between two strains of yeast, for each of 8,000 genes. We will measure the expression levels of each gene, in n samples of strain 1 and m samples of strain 2. We plan to compute a P-value for each gene, using an unpaired two-sample t-test for each gene (the particular type of test does not matter). a) What are the null hypotheses in these tests (in words)? [2] b) If, in fact, the two strains are identical, how many of these tests do we expect to produce a P-value exceeding 1/4? [2]
A factory produces glass for windows. The thickness X of an arbitrarily selected pane of glass is assumed to be Normally distributed with expectation μ = 4.10 and standard deviation σ = 0.04. Expectation and Standard deviation is measured in millimeters. What is the probability that an arbitrary route has a thickness less than 4.00 mm?
Evaluate ab+dc if a=56 , b=−34 , c=0.4 , and d=12 . Write in simplest form.
A membership to the gym cost $25 per person in 1995. The membership cost has increased by an average $6 per person for each year since 1995. Write a linear equation for the cost of a gym membership for one person since 1995. What is the cost of a gym membership in 2009?
56 × 12 = 672. How should you adjust this answer 672 to determine 57 × 12? a) The answer increases by 1 b) The answer increases by 57 c) The answer increases by 56 d) The answer increases by 12
the length of the fenced in area is to be 5 ft greater than the width and the total amount of fencing to be used is 89 ft find the width and length
15=5(x+3)
f(x)= 9-x^2 find (f(x+h)-f(x) )/h
Write a linear equation in the slope-intercept form. Slope of the line is -1 and goes through (8,4)