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gregori [183]
4 years ago
5

1) A box is 16m long, 28m broad and 10m high.what is the volume of 100 similar boxes?2)When was S.I unit introduced? (3)0How man

y fundamental units are there? What are they? (4)Write down the formulae of area and volume.
Physics
1 answer:
Romashka-Z-Leto [24]4 years ago
3 0

Explanation:

1)a=16m

b=28m

c=10m

volume of one box: V=16*28*10=4480m³

volume of 100 boxes: 4480*100=448000m³

2) 1960

3) 7: meter-length, kilogramme-mass, second-time, ampere-electric current, kelvin-temperature, candela-luminous intensity, mole-amount of substance

4)Area: S=a*b

Volume: V=a*b*c

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german

Answer:

Less

Explanation:

Since acceleration is inversely propotional to mass keeping the force constant, hence more mass will accelerate less and vice versa.

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3 years ago
A 70 kg box is pulled by a 400 N force at an angle of 30° to the horizontal. The force of kinetic friction is 75 N.
Art [367]

45 degrees northwest

4 0
3 years ago
La tension que se transmite en la cuerda BD es de 75 lb. Calcula el momento de fuerza generada por la cuerda respecto al punto C
Bas_tet [7]

Answer:

Mc = 1920[lb*in]

Explanation:

Para poder solucionar este problema debemos realizar un análisis estático, por tal motivo lo primero es realizar un diagrama de cuerpo libre con las respectivas fuerzas actuando sobre la barra ABC. DE igual manera calcular la geometría de la configuración mostrada.

El diagrama de cuerpo libre se puede ver en la imagen adjunta, con la solución de este problema.

Lo primero es determinar el angulo t, el cual por medio de las propiedades del triangulo rectángulo se puede determinar.

Con este angulo (t) ya determinado, fijamos la atención en el triangulo BCD, este triangulo no es rectángulo, pero por medio de la ley de senos podemos determinar el angulo omega.

Después de determinar el angulo omega, restamos el angulo (t) para poder determinar el angulo (a).

Seguidamente realizamos una sumatoria de momentos alrededor del punto C, utilizado las respectivas fuerzas con los ángulos descompuestos.

El momento en el punto C es de 1920 [Lb*in].

Nota: ya que no se menciona la fuerza en el punto A, esta se desprecia y no se tiene en cuenta en los calculos. En la imagen adjunta se puede ver el procedimiento desarrollado.

7 0
3 years ago
Which of these results in kinetic energy of an object? a position b motion c mass d volume
Masja [62]

Answer:

Option B

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3 0
3 years ago
Read 2 more answers
A 15 m long garden hose han an inner diameter of 2.5 cm. One end is connected to a spigot; 20 C water flows from the other end a
pogonyaev
We can solve this problem using <span>Hagen–Poiseuille equation. Derivation of this equation is a bit complicated so I will just write down the equation.
</span>\Delta P= \frac{8\mu QL}{\pi R^4}
This equation gives you the pressure drop <span>in an </span>incompressible<span> and </span>Newtonian<span> fluid in </span>laminar flow<span> flowing through a long cylindrical pipe of the constant cross section.
L is the length of the cylinder, Q is the volumetric flow rate, R is the radius of the pipe, and \mu is dynamic viscosity.
Dynamic viscosity of water at 20 Celsius is 0.001 PaS. 
Now we can calculate the pressure drop:
</span>\Delta P= \frac{8\cdot 0.001\cdot 15 \cdot 0.015}{\pi 3.9\cdot 10^{-7}}=1469.12 $Pa<span>
</span>
7 0
3 years ago
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