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Answer:
Explanation:
When a body is thrown upwards, its velocity decreases. This is because the kinetic energy gradually changes into potential energy. At the highest point, the velocity becomes zero since the kinetic energy gets completely converted into potential energy.
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Answer:
Voltage-gated K+ channels
The statement the mechanical advantage of the lever is 16 is False.
<h3>Mechanical Advantage</h3>
Mechanical advantage MA = d/D where
- d = distance moved by effort and
- D = distance moved by load
Given that the effort arm is 8 meters long, d = distance moved by effort = 8 m.
Also, given that the resistance arm is 2 meters long, D = distance moved by load = 2 m.
<h3>Calculating the mechanical advantage</h3>
So, substituting the values of the variables into the equation, we have
MA = d/D
MA = 8 m/2 m
MA = 4
Since MA = 4, so, the stament is False.
So, the statement the mechanical advantage of the lever is 16 is False.
Learn more about mechanical advantage here:
brainly.com/question/13779480
Complete Question:
Find the resistance of a wire of length 0.65 m, radius 0.25 mm and resistivity 3 * 10^{-6} ohm-metre.
Answer:
Resistance = 9.95 Ohms
Explanation:
<u>Given the following data;</u>
Length = 0.65 m
Radius = 0.25 mm to meters = 0.00025 m
Resistivity = 3 * 10^{-6} ohm-metre.
To find the resistance of the wire;
Mathematically, resistance is given by the formula;

Where;
- P is the resistivity of the material.
- L is the length of the material.
- A is the cross-sectional area of the material.
First of all, we would find the cross-sectional area of the wire.
Area of circle = πr²
Substituting into the equation, we have;
Area = 3.142 * (0.00025)²
Area = 3.142 * 6.25 * 10^{-8}
Area = 1.96 * 10^{-7} m²
Now, to find the resistance of the wire;


<em>Resistance = 9.95 Ohms </em>