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kiruha [24]
3 years ago
13

In an equation f = l^2-d^2/4l the intercept is​

Physics
1 answer:
DanielleElmas [232]3 years ago
5 0

Answer:

the intercept is the orgin (0,0)

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If you have a density of 100 kg/L, and a mass of 1000 units, tell me the following: First what are the mass units?
Troyanec [42]

Answer:

<em> The mas unit is the the 'Kilogram' written as 'kg'</em>

<em>Volume is 10 L</em>

<em></em>

Explanation:

The complete question is

If you have a density of 100 kg/L, and a mass of 1000 units, tell me the following: First, what are the mass units?

Second, what is the volume

mass units is the 'Kilogram', written as 'kg'

density = mass/volume = 100 kg/L

the mass  = 1000 kg

volume = mass/density = 1000/100 =<em> 10 L</em>

7 0
3 years ago
Un bloque de 20kg de masa se desplaza horizontalmente en la dirección de eje X por acción de una fuerza horizontal variable F =
zmey [24]

Answer:

a) El trabajo realizado por esta fuerza mientras el bloque se mueve desde la posición x = + 10 m hasta la posición x = + 20 m es 900 joules.

b) La rapidez del bloque en la posición x = + 20 metros es aproximadamente 5.701 metros por segundo.

Explanation:

a) El trabajo expermentado por el bloque (W), medido en joules, es definida por la siguiente ecuación integral:

W = \int\limits^{x_{max}}_ {x_{min}} F(x) \, dx (1)

Donde:

x_{min}, x_{max} - Posiciones mínima y máxima del bloque, medidos en metros.

F(x) - Fuerza horizontal aplicada al bloque, medida en newtons.

Si conocemos que F(x) = 6\cdot x, x_{min} = 10\,m y x_{max} = 20\,m, entonces el trabajo realizado por esta fuerza es:

W = \int\limits^{20\,m}_{10\,m} {6\cdot x} \, dx (2)

W = 6\int\limits^{20\,m}_{10\,m} x\, dx

W = 3\cdot x^{2}\left|\limits_{10\,m}^{20\,m}

W = 3\cdot [(20\,m)^{2}-(10\,m)^{2}]

W = 900\,J

El trabajo realizado por esta fuerza mientras el bloque se mueve desde la posición x = + 10 m hasta la posición x = + 20 m es 900 joules.

b) La rapidez final del bloque se determina mediante de Teorema del Trabajo y la Energía, es decir:

W = K_{f}-K_{o} (3)

Donde son K_{o}, K_{f} las energías cinéticas traslacionales inicial y final, medidos en joules.

Al aplicar la definición de energía cinética traslacional, expandimos y simplificamos la ecuación como sigue:

W = \frac{1}{2}\cdot m \cdot (v_{f}^{2}-v_{o}^{2}) (4)

Donde:

m - Masa del bloque, medido en kilogramos.

v_{o}, v_{f} - Rapideces inicial y final del bloque, medidos en metros por segundo.

\frac{2\cdot W}{m} = v_{f}^{2}-v_{o}^{2}

v_{f} = \sqrt{\frac{2\cdot W}{m}+v_{o}^{2}}

Si conocemos que W = 900\,J, m = 20\,kg y v_{o} = \sqrt{10}\,\frac{m}{s}, entonces la rapidez final del bloque es:

v_{f} = \sqrt{\frac{900\,J}{2\cdot (20\,kg)}+10\,\frac{m^{2}}{s^{2}}  }

v_{f} \approx 5.701\,\frac{m}{s}

La rapidez del bloque en la posición x = + 20 metros es aproximadamente 5.701 metros por segundo.

6 0
3 years ago
The Emerald Suite is a revolving restaurant at the top of the Space Needle in Seattle, Washington. If a customer sitting 18 m fr
antiseptic1488 [7]

Answer:

 w = 1.41 10⁻³ rad / s

Explanation:

For this problem we will use that the angular and linear velocity are related

              v = w r

              w = v / r

Let's calculate

            w = 2.54 10⁻² / 18

            w = 1.41 10⁻³ rad / s

The angular speed of the entire restaurant is the same

7 0
4 years ago
Why people won’t want to live near wind turbines.
Tatiana [17]

Answer:

People think they ruin landscapes.

Explanation:

This is a common opinion and will be accepted as a point in any essay.

8 0
3 years ago
Read 2 more answers
The radius of the Earth is apprximately 3,960 miles, while the radius of the Moon is approximately 1,080 miles. How many times l
den301095 [7]
The area of a sphere can be obtained by A = 4*pi*r^2

Let us compare the surface areas of the Earth and the Moon:

Surface area of the Earth:

<span>A = 4*pi*(3960)^2
</span>A = 197060797.4 mi^2

Surface area of the Moon:

<span>A = 4*pi*(1080)^2
</span>A = 14657414.68 mi^2

Comparing the two:

197060797.4/<span>14657414.68 = 13.44
</span>
Therefore, the surface area of the Earth is 13.44 times much larger than the surface area of the Moon.
4 0
4 years ago
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