4 years ago

When charges build up on a surface they:

Physics

1 answer:

NeTakaya4 years ago

6 0

The awnser is A and B

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A barge ﬂoating in fresh water (p = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 550 m2 and height H

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Answer:

a) $\Delta m = 330000\,kg$ , b) $h = 1.268\,m$

Explanation:

a) According the Archimedes' Principle, the buoyancy force is equal to the displaced weight of surrounding liquid. The mass of the coal in the barge is:

$\Delta m \cdot g = \rho_{w}\cdot g \cdot \Delta V$

$\Delta m = \rho_{w}\cdot \Delta V$

$\Delta m = \left(1000\,\frac{kg}{m^{3}} \right)\cdot (550\,m^{2})\cdot (1.05\,m-0.45\,m)$

$\Delta m = 330000\,kg$

b) The submersion height is found by using the equation derived previously:

$\Delta m = \rho_{w}\cdot \Delta V$

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The final submersion height is:

$h = 1.268\,m$

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3 years ago

Read 2 more answers

The angle at which a wave strikes a surface is ___ the angle at which the wave is reflected.

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Answer:

a)equal to

Explanation:

properties of a wave

applies in reflection

others include:refraction,diffraction,interference

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