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Lena [83]
3 years ago
13

if a water wave vibrates up and down 4 times each second,the distance between 2 successive crest is 5 meters, and the height fro

m lowest part to highest part of the wave is 2 meters. what is the frequency of the wave in hertz? what is the peroid of the wave in second? what is the speed of the wave in meters per seconds? what is the amplitude of the wave in meters?
Physics
2 answers:
Mnenie [13.5K]3 years ago
5 0

frequency=4Hz

wavelength=5m

amplitude=1/2×2=1m

period=1/frequency

1/4=0.25seconds.

velocity=wavelength×frequency

=5×4

=20m/s

tatyana61 [14]3 years ago
4 0

Answer:

4 Hz

5 m

1 m

20 m/s

Explanation:

The first part of the sentence describes the frequency of the wave i.e., the number of oscillations every second

f = 4 /s = 4 Hz

The second part of the sentence describes the wavelength or period of the wave i.e., the distance between successive crests or troughs.

λ = 5 m

The last part of the sentence describes the peak to peak amplitude of the wave i.e., the height between the lowest part to highest part of the wave

2{\hat {U}}=2\ m

The peak amplitude is given by

{\hat {U}}=\frac{2}{2}=1\ m

The velocity of a wave is given by

v = fλ

⇒v = 4×5

⇒v = 20 m/s

The velocity of the wave is 20 m/s

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Consider the following distribution of objects: a 2.00-kg object with its center of gravity at (0, 0) m, a 2.20-kg object at (0,
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Answer:

body position 4 is (-1,133, -1.83)

Explanation:

The concept of center of gravity is of great importance since in this all external forces are considered applied, it is defined by

               x_cm = 1 /M   ∑ x_{i} m_{i}

               y_cm = 1 /M   ∑ y_{i} mi

Where M is the total mass of the body, mi is the mass of each element

give us the mass and position of this masses

body 1

m1 = 2.00 ka

x1 = 0 me

y1 = 0 me

body 2

m2 = 2.20 kg

x2 = 0m

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body 3

m3 = 3.4 kg

x3 = 2.00 m

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body 4

m4 = 6 kg

    x4=?

   y4=?

mass center position

x_cm = 0

y_cm = 0

let's apply to the equations of the initial part

X axis

    M = 2.00 + 2.20 + 3.40

    M = 7.6 kg

    0 = 1 / 7.6 (2 0 + 2.2 0 + 3.4 2 + 6 x4)

     x4 = -6.8 / 6

     x4 = -1,133 m

Axis y

    0 = 1 / 7.6 (2 0 + 2.20 5 +3.4 0 + 6 y4)

    y4 = -11/6

    y4 = -1.83 m

body position 4 is (-1,133, -1.83)

7 0
3 years ago
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