Ask question

Ask question

All categories

3 years ago

9

1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m? (please show work that I can unde

rstand lol )

2 answers:

liraira [26]3 years ago

6 0

Hi there!

• Wavelength, λ = 0.30
• Frequency, ν = 100 Hz

Accr'ding to the question :-

Wave Speed = Frequency (Hz) × Wavelength (m)

= 100 Hz × 0.30 m

= 30 Hz¹m¹

Hence,
The required answer is 30 Hz¹m¹.

~ Hope it helps!

Dovator [93]3 years ago

4 0

Your answer is 30 m/s.

To find the wave speed multiply the frequency by the wavelength.
$100*0.30$

You might be interested in

What property is <br><br> 5(x+y)=5x+5y

Law Incorporation [45]

Answer: Distributive Property

4 0

3 years ago

Show that every triangle formed by the coordinate axes and a tangent line to y = 1/x ( for x > 0)

vfiekz [6]

Answer:

Step-by-step explanation:

given a point $(x_0,y_0)$ the equation of a line with slope m that passes through the given point is

$y-y_0 = m(x-x_0)$ or equivalently

$y = mx+(y_0-mx_0)$ .

Recall that a line of the form $y=mx+b$ , the y intercept is b and the x intercept is $\frac{-b}{m}$ .

So, in our case, the y intercept is $(y_0-mx_0)$ and the x intercept is $\frac{mx_0-y_0}{m}$ .

In our case, we know that the line is tangent to the graph of 1/x. So consider a point over the graph $(x_0,\frac{1}{x_0})$ . Which means that $y_0=\frac{1}{x_0}$

The slope of the tangent line is given by the derivative of the function evaluated at $x_0$ . Using the properties of derivatives, we get

$y' = \frac{-1}{x^2}$ . So evaluated at $x_0$ we get $m = \frac{-1}{x_0^2}$

Replacing the values in our previous findings we get that the y intercept is

$(y_0-mx_0) = (\frac{1}{x_0}-(\frac{-1}{x_0^2}x_0)) = \frac{2}{x_0}$

The x intercept is

$\frac{mx_0-y_0}{m} = \frac{\frac{-1}{x_0^2}x_0-\frac{1}{x_0}}{\frac{-1}{x_0^2}} = 2x_0$

The triangle in consideration has height $\frac{2}{x_0}$ and base $2x_0$ . So the area is

$\frac{1}{2}\frac{2}{x_0}\cdot 2x_0=2$

So regardless of the point we take on the graph, the area of the triangle is always 2.

6 0

3 years ago

Simplify x^3 y^3 / x^3 y^3

Marysya12 [62]

Answer:

$\frac{1}{y}$

Step-by-step explanation:

When simplifying an exponent a way to do is to expand the exponent. This means that it will now be

$\frac{x*x*x*y*y*y}{x*x*x*y*y}$

Whenever you see an x or y on the numerator and denominator cross it out because it is the same thing as 1

When you cross out all of the x's and y's the only variable left is y in the denominator. This means that the answer is $\frac{1}{y}$

5 0

3 years ago

HELP ASAP , algebra 1 giving BRAINLIEST , no guessing,

katovenus [111]

Answer:

The answer is B that is the answer

5 0

3 years ago

Read 2 more answers

Julio's father is 4 times as old as Julio. The sum of their ages is no less than 55.

seropon [69]

Call (F) the age of the father and (J) the age of Julio

The F & J are related in this way: F=4J

Now you have a restriction in the form of inequality: The sum of both ages has to be greater or equal than 55.

Algebraically that is: F + J ≥ 55

You can substitute F with 4J to find the solution for J:

4J + J ≥ 55

5J ≥ 55

Now divide both sides by 5

5J/5 ≥ 55/5

J ≥ 11

That Imposes a lower boundary for the value of J of 11, meaning that the youngest age of Julio can be 11

8 0

3 years ago