Answer:
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Explanation:
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Answer:
a. L =3.465 J.s
b. 3.186 rad/s
c. T = 1.972 s
d. Lp = 0.022 J.s; up or down, depending on the direction of L
Explanation:
(a)We have the formula for angular momentum as
L = I*w where I = moment of inertia = 
L = 
(b) ω = M*g*D/L
where D = L/2 = 0.96/2 = 0.48m
ω = (23* 0.48/3.465) rad/s = 3.186 rad/s
(c) T = 2π/ω
T = 2*π/3.186 s = 1.972 s
(d) Lp = 
Solving with mass M, D and angular velocity ω
Lp = 0.022 J.s; up or down, depending on the direction of L
Answer:

Explanation:
At thermal equilibrium we have heat given by aluminium must be equal to the heat absorbed by the water
so we will have


so we will have

so we have

so we have


Answer:

Explanation:
From the question we are told that:
Mass 
Radius
Generally the equation for inertia is mathematically given by



Answer:
Both A and B
Explanation:
The interaction of magnetic fields and armature results into a rotational force of the armature hence turning motion. It's important to note that you will always need two magnetic fields in order to experience the force since one magnetic field is at the rotating armature and another at the casing. Considering the arguments of these two technicians, both of them are correct in their arguments.