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3 years ago

1. 5. What is the frequency of a wave that has a wave speed of 120 m/s and a wavelength of 0.40 m

Mathematics

2 answers:

balu736 [363]3 years ago

8 0

Answer:

50Hz x .10m = 5 m/s

20 m/s divided by .50m = 40Hz

80 m/s divided by .20m = 400Hz

120 m/s divided by .40m = 300Hz

340 m/s divided by 440Hz = .77m

Novay_Z [31]3 years ago

7 0

Answer:

300 Hz

Step-by-step explanation:

Something may be wrong on my end because I only see a question labeled 5. Anyways, you can basically just follow the units here.

Wave speed is in m/s
Wavelength is in m
Frequency is in 1/s or s⁻¹, aka Hertz (Hz)

So in order to use the given info to get the correct units...

Frequency = (Wave speed/Wavelength)

Plugging in or knowns gives us:

Frequency = (120/.4) = 300 Hz

This might be an informal way to think about it technically but it's a good way to do it nonetheless.

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Angie makes a spicy salsa by adding red pepper flakes to a chunky tomato mix in proportional amounts. For example she mixes 1/2

Nastasia [14]

Answer:

Please read the answer below.

Step-by-step explanation:

1. Let's represent the relationship between red pepper flakes, in teaspoons, to tomato mix, in cups in a table

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Tomato mix (cups) 2 4 6 8 10 12 14 16 18 20

2. Let's represent the relationship between red pepper flakes, in teaspoons, to tomato mix, in cups writing a equation:

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3 years ago

Mrs. Hernanadez is covering the top of a kitchen shelf that is26 3/8 inches long and 15 1/2 inches wide. She incorrectly measure

miss Akunina [59]

Answer:

The calculation of Mrs. Hernanadez will affect by 1.375 inches lesser.

Step-by-step explanation:

Given:

Length of the Kitchen shelf = 26 3/8 inches

Width of the Kitchen Shelf = 15 1/2 inches

Incorrect measurement of the length of the kitchen shelf = 25 inches

Solution:

The Actual length of the kitchen shelf is $26\frac{3}{8}$

But she measured as 25 inches

So the error in the measurement will be

=>Correct length of the shelf - Incorrect length of the shelf

=> $26\frac{3}{8}$ - 25

Coverting the mixed fraction to fraction,

=> $\frac{211}{8}$ - 25

=> $26.375$ - 25

=>1.375

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3 years ago

Your restaurant bill comes to $46.27. Estimate a 10% tip.

koban [17]

Answer:

The tip would be $4.63 unless you round it to $5

Step-by-step explanation:

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3 years ago

As the Earth revolves around the sun, it travels at a speed of approximately 18

zzz [600]

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3 years ago

Solve for x, 12y+6=6(y+1)

Vanyuwa [196]

For this case we must solve the following equation:

$12y + 6 = 6 (y + 1)$

We apply distributive property on the right side of the equation:

$12y + 6 = 6y + 6$

We subtract 6y on both sides of the equation:

$12y-6y + 6 = 6\\6y + 6 = 6$

We subtract 6 from both sides of the equation:

$6y = 6-6\\6y = 0$

Dividing by 6 on both sides of the equation:

$y = 0$

So, the result is $y = 0$

Answer:

$y = 0$

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3 years ago