3 years ago

please help i really need help with this TBT Hw please help me and show work ASAP Please rotate your phone

Mathematics

1 answer:

Katen [24]3 years ago

6 0

Answers:

1. 1

2. 2

3. 4

4. 1

//Hope this helps. Look the image for better understanding.

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3 years ago

If Vector u=(5,-7) and v=(-11,3), 2v-6u=_____ and ||2v-6u||≈_____

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2 years ago

A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5

boyakko [2]

Additional information to complete the question:

How long does it take for a short pulse of light to travel from one end of the glass to the other?

Express your answer in terms of some or all of the variables f and L. Use the numeric value given for n in the introduction.

T = ___________ s

Answer:

$T = \frac{15}{f}$

Step-by-step explanation:

Given:

Thickness og glass = L

Index of refraction n=1.5

Frequency = f

$Wavelength = \frac{L}{10}$

λ(air) $= \frac{L}{10}$

λ(glass) = λ(air) / n

= $\frac{\frac{L}{10}}{1.5}$

= $\frac{L}{10} * \frac{1}{1.5}$

= $\frac{L}{15}$

V(glass) = fλ(glass)

$= f * \frac{L}{15}$

$T = \frac{L}{V_{glass}} = \frac{15}{f}$

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3 years ago

Which pair of numbers has an LCM of 8

maxonik [38]

Answer:

2,8

Step-by-step explanation:

3 0

3 years ago

Is b = 15 a solution to the equation 4b - 20 = 40?

irina [24]

Answer:

yes

Step-by-step explanation:

4 x 15 - 20 = 40

60 - 20 = 40

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3 years ago

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please help i really need help with this TBT Hw please help me and show work ASAP Please rotate your phone ​

please help i really need help with this TBT Hw please help me and show work ASAP Please rotate your phone