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Liono4ka [1.6K]
3 years ago
13

Light traveling through air strikes the surface of the four different materials shown. Which material reflects light but does no

t refract it? 1. Diamond 2. water being poured 3. triangular glass prism 4. 2 silver spoons
Physics
2 answers:
AysviL [449]3 years ago
7 0

Answer:

The answer is 4. 2 silver spoons

Explanation:

Hello! Let's solve this!

Many materials refract light in addition to reflecting it. This means that the light passes through the object at a certain angle.

In this case, of the given options, the correct option is 4. 2 silver spoons, since it is the only material that is not transparent of the dice.

We conclude that the answer is 4. 2 silver spoons

Elza [17]3 years ago
4 0
It would be{ 4) 2 silver spoons}<span>
that the material reflects light but does not refract it</span>
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A 12.0-kg package in a mail-sorting room slides 2.00 m down a chute that is inclined at 53.0° below the horizontal. The coeffici
zvonat [6]

Answer

given,

mass of the package = 12 kg

slides down distance = 2 m

angle of inclination = 53.0°

coefficient of kinetic friction = 0.4

a) work done on the package by friction is

              W_f = -μk R d

                   = -μk (mg cos 53°)(2.0)

                   =-(0.4)(8.0 )(9.8)(cos 53°)(2.0)

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b)

work done on the package by gravity is

             W_g = m (g sin 53°) d

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                   =125.23 J

c)

the work done on the package by the normal force is

             W_n = 0

d)

the net work done on the package is

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7 0
3 years ago
An inner city revitalization zone is a rectangle that is twice as long as it is wide. The width of the region is growing at a ra
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Answer:

\frac{dA}{dt} = 28800 \ m^2/year

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Geometry</u>

  • Area of a Rectangle: A = lw

<u>Algebra I</u>

  • Exponential Property: w^n \cdot w^m = w^{n + m}

<u>Calculus</u>

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Differentiating with respect to time

Basic Power Rule:

  • f(x) = cxⁿ
  • f’(x) = c·nxⁿ⁻¹

Explanation:

<u>Step 1: Define</u>

Area is A = lw

2w = l

w = 300 m

\frac{dw}{dt} = 24 \ m/year

<u>Step 2: Rewrite Equation</u>

  1. Substitute in <em>l</em>:                    A = (2w)w
  2. Multiply:                              A = 2w²

<u>Step 3: Differentiate</u>

<em>Differentiate the new area formula with respect to time.</em>

  1. Differentiate [Basic Power Rule]:                                                                   \frac{dA}{dt} = 2 \cdot 2w^{2-1}\frac{dw}{dt}
  2. Simplify:                                                                                                           \frac{dA}{dt} = 4w\frac{dw}{dt}

<u>Step 4: Find Rate</u>

<em>Use defined variables</em>

  1. Substitute:                    \frac{dA}{dt} = 4(300 \ m)(24 \ m/year)
  2. Multiply:                        \frac{dA}{dt} = (1200 \ m)(24 \ m/year)
  3. Multiply:                        \frac{dA}{dt} = 28800 \ m^2/year
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