The coins<span> are thus supported by the surface tension of the </span>water<span>. (Aluminum is denser than </span>water<span> and will not </span>float<span>, if the </span>coins<span> are pushed under </span>water<span> they sink to the bottom.) Two </span>coins<span> each depress the surface of the </span><span>water</span>
The linear velocity of the wheel is 16 m/s.
<h3 /><h3>What is linear velocity?</h3>
Linear velocity is the rate of change of displacement with regard to time when the object is moving in a straight line
To calculate the linear velocity of the wheel, we use the formula below.
Formula:
- v = ωr............. Equation 1
Where:
- v = Linear velocity
- ω = Angular velocity
- r = Radius of the wheel.
From the question,
Given:
Substitute these values into equation 1
Hence, The linear velocity of the wheel is 16 m/s.
Learn more about linear velocity here: brainly.com/question/25749514
Answer:
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Explanation:
The resistance of a wire is defined as
R = (ρL)/A
where
ρ = resistivity
L = length
A = cross-sectional area
Before the wire is drawn, let
L₁ = the length
A₁ = the cross-sectional area.
The volume of the wire and its resistivity remain unchanged after it is drawn.
After it is drawn, the new length is
L₂ = 4L₁
To preserve the volume, the new cross-sectional area is
A₂ = (L₁A₁)/L₂ = (L₁A₁)/(4L₁) = A₁/4
The initial resistance is given as
R₁ = (ρL₁)/A₁ = 5.3 Ω
The final resistance is
Answer: 84.8 Ω