75% is the efficiency of the cell.
Explanation:
Internal resistance is the resistance generated due to the devices present in the circuit. Most preferably, it is the resistance of the battery connected to the circuit.
As the current, resistance of the resistor and the internal resistance of the battery is given as 6 A, 6 ohms and 2 ohms.
Then the efficiency of the cell is 
So, the efficiency of the cell is 
Then, E = 
So, the efficiency is 75%.
75% is the efficiency of the cell.
From Newton's Three Laws of Motion, derived formulas are already conveniently presented for a rectilinear motion at constant acceleration. One of its equations is
y = (Vf² - Vi²)/2a, where
y is the vertical height travelled by the object
Vf is the final velocity
Vi is the initial velocity
a is the acceleration
Now, when a man jumps, the only force acting on him is gravity pulling him down. When he reaches his maximum height, eventually his velocity will reach zero. So, Vf = 0. Suppose all parameters with subscript 1 refers to man jumping on Earth and those with subscript 2 refers to the man jumping on moon. Since initial velocity and angle is said to be the same, when we find the ratio of x₂/x₁, the terms (Vf²-Vi²) cancels out leaving us with
x₂/x₁ = a₂/a₁
It is common knowledge that gravity on Earth is 9.81 m/s². According to literature, the gravity on the moon is 1.62 m/s². Thus,
x₂/x₁ = a₁/a₂ = 9.81/1.62 = 6
x₂ = 6x₁
Therefore, the man jumping on the moon can reach 6 times higher than in Earth.
Lactic acid fermentation. hope this helps :)
The density of the second liquid could be any value less than 1 g/cc (greater than 0 of course). Less dense liquids float in another liquid of relative greater density.
Answer:
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