Physics: The mass of a car is 2,400 kg and its momentum is 22,240 kg m/s. What is its velocity?

(b)Explanation:GivenDepth of tank is Specific gravity of seawater is Pressure difference due to column of water is So, absolute pressure is given by Thus, option (b) is correct....

The mass of a car is 2,400 kg and its momentum is - id240026173811, ayshearouse1203

Ответ:

rouseallie9428

11.05.2020

Physics

(b)

Explanation:

Given

Depth of tank is $h=12\ ft\ \text{or}\ 3.65\ m$

Specific gravity of seawater is S.G.=1.03

Pressure difference due to column of water is

$\Rightarrow \Delta P=\rho gh\\\Rightarrow \Delta P=1.03\times 10^3\times 9.8\times 3.65\\\Rightarrow \Delta P=36.84\times 10^3\ Pa\ \text{or}\\\Rightarrow \Delta P=5.34\ psi$

So, absolute pressure is given by

$\Rightarrow P_{abs}=P_{atm}+\Delta P\\\Rightarrow P_{abs}=14.8+5.34\\\Rightarrow P_{abs}=20.14\approx 20.2\ psi$

Thus, option (b) is correct.

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The mass of a car is 2,400 kg and its momentum is 22,240 kg
m/s. What is its velocity?

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