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Drupady [299]
3 years ago
14

What is the kinetic energy K of the rotating wheel? Express your answer in terms of m, r, n, t, and π.

Physics
1 answer:
Leviafan [203]3 years ago
7 0

Answer:

K = ( (pi)^2 * n^2 * m * r^2 ) / t^2

Explanation:

=(1/2)Iw^2

I = moment of inertia= (1/2)mr^2

w = angular speed = 2(pi)n/t

By substitution, we have

K = ( (pi)^2 * n^2 * m * r^2 ) / t^2

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3 years ago
Suppose that we are designing a cardiac pacemaker circuit. The circuit is required to deliver pulses of 1ms duration to the hear
olchik [2.2K]

Answer:

Minimum capacitance = 200 μF

Explanation:

From image B attached, we can calculate the current flowing through the capacitors.

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Since V=IR; I = V/R = 5/500 = 0.01 A

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So minimum capacitance will be determined from;

i(t) = C(dv/dt)

So, C = i(t)(Δt/Δv) = 0.01[0.001/0.05]

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8 0
3 years ago
The Bohr model below represents which answer Choice
Anton [14]

Answer:

Na⁺

Explanation:

In the given atom:

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The number of protons within an atom is used to determine the kind of atom we have been given.

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So, we have a Na⁺

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3 years ago
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Question 2 of 10
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3 years ago
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