2 years ago

True or False. The pressure inside a piston is the same in all directions.

Physics

1 answer:

Dominik [7]2 years ago

4 0

Answer:

True

Explanation:

Pascal's law says that pressure applied to an enclosed fluid will be transmitted without a change in magnitude to every point of the fluid and to the walls of the container. The pressure at any point in the fluid is equal in all directions.

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A magnesium oxide component must not fail when a tensile stress of 10.5 MPa is applied. Determine the maximum allowable surface

Aloiza [94]

Answer:

Maximum permitted surface crack length is 1.29 mm

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As per the question:

Tensile stress, $\sigma = 10.5\ MPa = 10.5\times 10^{6}\ Pa$

Surface energy of magnesium oxide, SE = $1.0\ J/m^{2}$

Modulus of elasticity of the material, E = 225 GPa = $225\times 10^{9}\ Pa$

Now,

To calculate the maximum allowable surface crack length:

$L = \frac{2E\times SE}{\sigma^{2}\pi }$

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3 years ago

a body builder uses a chest expander with 5 strings.it takes a force of 200n to pull one string by 15cm.how much force will be n

wolverine [178]

Answer:

Explanation:

It takes 200N to expand 15cm of one string.

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