What is the potential energy of a box weighing 2 N that is sitting on a 4 m high shelf?

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Ответ:

jaidalynkimora

25.09.2020

Physics

$20.61\times 10^{5}Nm^{-2}$

Explanation:

We are given that

h=20 cm=0.20m

1m=100 cm

Density of water= $\rho=1.0\times 10^3 kg/m^3$

We have to find the pressure experienced by driver at that depth.

Atmospheric pressure, P0=101 kPa

Pressure experience by driver

$P=\rho hg+P_0$

Where g=9.8

$P=1.0\times 10^3\times 0.20\times 9.8+101$

P=2061KPa

1 KPa= $1000Nm^{-2}$

$P=2061\times 1000=2061000N/m^2$

$P=20.61\times 10^{5}Nm^{-2}$

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