A brine solution of salt flows at a constant rate of 4L/min into a large tank that initially held 100L of pure water. The solutio
n inside the tank is kept well-stirred and flows out of the tank at a rate of 3L/min. If the concentration of salt in the brine entering the tank is 0.2Kg/L, determine the mass of the salt in the tank after t minutes. When will the concentration of salt in the tank reach 01.kg/L?
2 answers:
Answer:
To reach 01.kg/L concentration of salt in the tank will take around 18.9 min
Explanation:
Attached
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Her displacement = 18 m
<h3>Further explanation</h3>Given
walks 50 m north and 32 m south
Required
displacement
Solution
Displacement shows vector motion that has magnitude and direction.
Displacement only looks at the distance between the starting point and the end point
Because it takes direction into account, a positive or negative sign is required
We determine that in vertical motion the upward direction is positive and the downward direction is negative
While the horizontal movement to the right is positive and the left has a negative sign
Students moving north (from the starting point) are moving positively by + 50 m
then moving south which means moving negative as far as -32 m
So that the displacement is