Consider the cross-sectional view of two, infinitely long, conductors shown below. The top conductor, located at =4
z
=
4
=4
z
=
4
has a current density of
⃗1=^4A/m2
J
→
1
=
a
x
^
4
A/m
2
⃗1=^4A/m2
J
→
1
=
a
x
^
4
A/m
2
and a radius of 1m. The lower conductor, located at
=−4
z
=
−
4
=−4
z
=
−
4
, has a current density of
⃗2=−^16A/m2
J
→
2
=
−
a
x
^
16
A/m
2
⃗2=−^16A/m2
J
→
2
=
−
a
x
^
16
A/m
2
and a radius of 0.5m.

What is the magnitude and direction of the magnetic field at (0, 0, 0)?

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed