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suter [353]
3 years ago
5

What is the wave speed of a wave that has a frequency of 200 Hz and a wavelength of 0.40 m?

Mathematics
2 answers:
marusya05 [52]3 years ago
7 0

Answer:

Speed = 80 m/s

Step-by-step explanation:

The formula to find the speed of a wave is found by

Speed = Wavelength x Frequency  where the frequency is in HZ and the wavelength is in meters

Speed = 200 * .40

Speed = 80 m/s

Serggg [28]3 years ago
3 0

Here is your answer

We know that

Velocity = Frequency × Wavelength (all in SI units)

V= 200×0.40

V= 80m/s

HOPE IT IS USEFUL

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In a highschool, 2/5 of the boys make up 250 students. how many boys are there in the high school?
stiv31 [10]

Answer:100 boys

Step-by-step explanation:

250 / 5 is 50.

50 x 2 is 100.

3 0
2 years ago
Please help.....no one would help me so PLZZZZ
Anvisha [2.4K]

Answer:

Step-by-step explanation:

a) r = 10/2 = 5 feet

Area of floor =πr² =3.14*5*5 = 78.5 feet²

B) h = 3 foot

Volume of cylinder = πr²h = 3.14*5*5*3 = 235.5 cubic feet

Volume of hemisphere =2/3πr³= 2*3.14*5*5*5/3=261.67 cubic feet

Volume of space inside the observatory = 497.17 cubic feet

7 0
3 years ago
In ΔOPQ, the measure of ∠Q=90°, the measure of ∠O=26°, and QO = 4.9 feet. Find the length of PQ to the nearest tenth of a foot.
Step2247 [10]

Given:

In ΔOPQ, m∠Q=90°, m∠O=26°, and QO = 4.9 feet.

To find:

The measure of side PQ.

Solution:

In ΔOPQ,

m\angle O+m\angle P+m\angle Q=180^\circ        [Angle sum property]

26^\circ+m\angle P+90^\circ=180^\circ

m\angle P+116^\circ=180^\circ

m\angle P=180^\circ -116^\circ

m\angle P=64^\circ

According to Law of Sines, we get

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

Using the Law of Sines, we get

\dfrac{p}{\sin P}=\dfrac{o}{\sin O}

\dfrac{QO}{\sin P}=\dfrac{PQ}{\sin O}

Substituting the given values, we get

\dfrac{4.9}{\sin (64^\circ)}=\dfrac{PQ}{\sin (26^\circ)}

\dfrac{4.9}{0.89879}=\dfrac{PQ}{0.43837}

\dfrac{4.9}{0.89879}\times 0.43837=PQ

2.38989=PQ

Approximate the value to the nearest tenth of a foot.

PQ\approx 2.4

Therefore, the length of PQ is 2.4 ft.

4 0
3 years ago
Does any body know how to prove a parallelogram with statements and reasons
murzikaleks [220]
Because the lines are parallel,

The width of that rhombus, or parallelogram.

If you conutined that line, they will never ever touch.

That is the meaning of parallel, and why it is a parallelogram.

7 0
2 years ago
I need help!!!! a b c or d
sleet_krkn [62]

Answer:

-3

Step-by-step explanation:

it is right

7 0
3 years ago
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