Answer:
0.011 N-m
Explanation:
Given that
The mass of a solid cylinder, m = 30 kg
The radius of the cylinder, r = 0.18 m
The acceleration of the cylinder, 
It rotates about an axis through its center. We need to find the torque acting on the cylinder. The formula for the torque is given by :

Where
I is the moment of inertia of the cylinder,
For cylinder,

So,

So, the required torque on the cylinder is 0.011 N-m.
Answer:
0.107 m
Explanation:
The magnetic field at the center of a current-carrying loop is given by

where
is the vacuum permeability
I is the current
r is the radius of the loop
In this problem we have
I = 3.40 A is the current in the loop
is the magnetic field at the centre of the loop
So, solving the formula for r we find

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Answer:
0.022kg/s
Explanation:
We are given that
Mass of boiled egg=46 g=

Constant force=F=25.6 N/m
Initial displacement=
Final displacement=
Time=t=4.55 s
Damping force=
We have to find the magnitude of damping constant b.
We know that the displacement of the oscillator under damping motion is given by

For maximum displacement 
Therefore , 
Substitute the values




Substitute the values




Hence,the magnitude of damping constant b=0.022kg/s