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Serhud [2]
3 years ago
13

Which statement correctly describes the classification of chemical reactions into different categories?(1 point) Not all reactio

ns fit into a category, and a reaction can fit into only one category. Not all reactions fit into a category, and a reaction can fit into only one category. Not all reactions fit into a category, and some reactions can fit into more than one category. Not all reactions fit into a category, and some reactions can fit into more than one category. All reactions fit into a category, and a reaction can fit into only one category. All reactions fit into a category, and a reaction can fit into only one category. All reactions fit into a category, and some reactions can fit into more than one category. All reactions fit into a category, and some reactions can fit into more than one category.
Physics
1 answer:
VMariaS [17]3 years ago
4 0

Answer:

its a

Explanation:

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strojnjashka [21]

Answer:

Explanation:

The formula for this, the easy one, is

N=N_0(\frac{1}{2})^{\frac{t}{H} where No is the initial amount of the element, t is the time in years, and H is the half life. Filling in:

N=48.0(\frac{1}{2})^{\frac{49.2}{12.3} and simplifying a bit:

N=48.0(.5)^4 and

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2 years ago
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Light is incident along the normal to face AB of a glass prism of refractive index 1.54. Find αmax, the largest value the angle
marusya05 [52]

To solve this problem it is necessary to use the concepts related to Snell's law.

Snell's law establishes that reflection is subject to

n_1sin\theta_1 = n_2sin\theta_2

Where,

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n = Indices of refraction for corresponding media

The total internal reflection would then be given by

n_1 sin\theta_1 = n_2sin\theta_2

(1.54) sin\theta_1 = (1.33)sin(90)

sin\theta_1 = \frac{1.33}{1.54}

\theta = sin^{-1}(\frac{1.33}{1.54})

\theta = 59.72\°

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\alpha = 90-59.72

\alpha = 30.27\°

Therefore the largest value of the angle α is 30.27°

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Two hockey pucks, each with a mass of 0.2 kg, slide across the ice and
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Answer:

Answe: It's B (apex)

Explanation:

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