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neonofarm [45]
3 years ago
14

Ocean waves with a wavelength of 12.9 m are

Physics
1 answer:
sergejj [24]3 years ago
4 0

Answer:

Speed, v = 2.96 m/s

Explanation:

We have,

Wavelength of ocean wave is 12.9 m

Frequency of wave is 0.23 Hz

It is required to find the speed of ocean wave. The speed of any wave in term of wavelength and frequency is equal to their product. So,

v=f\lambda\\\\v=0.23\times 12.9\\\\v=2.96\ m/s

So, the speed of wave is 2.96 m/s

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A projectile is fired vertically from Earth's surface with an initial speed v0. Neglecting air drag, how far above the surface o
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The initial height of the water in a sealed container of diameter 100.0 cm is 5.00 m. The air pressure inside the container is 0
katen-ka-za [31]

Answer:

a)  F = 2.66 10⁴ N, b)   h = 1.55 m

Explanation:

For this fluid exercise we use that the pressure at the tap point is

Exterior

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inside

         P₁ = P₀ + ρ g h

the liquid is water with a density of ρ=1000 km / m³

         P₁ = 0.85   1.01 10⁵ + 1000   9.8  5

         P₁ = 85850 + 49000

         P₁ = 1.3485 10⁵ Pa

the net force is

         ΔP = P₁- P₂

         Δp = 1.3485 10⁵ - 1.01 10⁵

         ΔP = 3.385 10⁴ Pa

Let's use the definition of pressure

         P = Fe / A

         F = P A

the area of ​​a circle is

         A = pi r² = [i d ^ 2/4

let's reduce the units to the SI system

         d = 100 cm (1 m / 100 cm) = 1 m

         F = 3.385 104 pi / 4 (1) ²

         F = 2.66 10⁴ N

b) the height for which the pressures are in equilibrium is

        P₁ = P₂

        0.85 P₀ + ρ g h = P₀

        h = \frac{P_o ( 1-0.850)}{\rho \ g}

        h = \frac{1.01 \ 10^5 ( 1 -0.85)}{1000 \ 9.8}

        h = 1.55 m

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2 years ago
If we decrease the distance an object moves we will (2 points)
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Decrease the amount of force applied
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