Question

A helium nucleus make a full rotation in a circle of radius 0.8 metre in two seconds. The value of the magnetic field B at the centre of the circle will be?​

Answer 1

Answer:

The current due to the revolution of the He nucleus is I=

2π

qω

=

2

2×1.6×10

−19

=1.6×10

−19

A

Magnetic field at the center B=

2r

μ

0

I

=

2×0.8

μ

0

×1.6×10

−19

=10

−19

μ

0

please mark me as brainly

Answer 2

Answer:

A thermoplastic is a material, usually a plastic polymer, which becomes more soft when heated and hard when cooled. Thermoplastic materials can be cooled and heated several times without any change in their chemical or mechanical properties. When thermoplastics are heated to their melting point, they melt to a liquid.

$\huge\sf {\orange {\underline {\pink{\underline { Blossoming Bud}}}}}$