Answer:
v1 = v2
Explanation:
Given:
- The missing figure is (attached).
- The Magnetic Field B1 > B2
Find:
How does the speed v1 of the electron in region 1 compare with the speed v2 in region 2?
Solution:
- From Lorentz Law we know that the Force that acts on the charge particle is the cross product of Magnetic Field Vector ( B1 or B2 ) and the velocity vector (v1 or v1).
- From the attached figure related to this problem we see that the electron velocity or direction of motion is always parallel to the magnetic field B1&B2.
- The law of cross product for parallel vector is 0. Hence, the Lorentz force acting on the electron is also zero.
- Zero Force means no work is done on the particle by the magnetic field, thus, the change in kinetic energy also zero for conservation of energy to hold.
- The initial and final kinetic energies of the electron is same. Hence, we can conclude that v1 = v2.
<span>To
determine the energy stored in the magnetic field, use the formula: E = ½ LI2
where E is the energy stored, L is the inductance (units: Henry), and I is the
current (units: Ampere). </span>
<span>Correspondingly, L = (µN2A)/l,
where, µ = permeability of medium (in this case, air), N = no. of turns, A = cross-sectional
area, and l = length. Given: N = 68 turns, l = 8 cm, d = 1.2 cm, and I = 0.77
A, other necessary variables are A = 1.13 cm2 and µair =
1.2566 x 10-6 H/m. Applying the formula and checking that the units
agree with each other, the final answer is 2.4352 x 10-6 J.</span>
Answer:
the thought of people in the pastthat is like fire and that can see than touch
Explanation:
heat is a form of energy that can transfer easly from one to the other
Answer:
Sir Isaac Newton PRS (25 December 1642 – 20 March 1726/27) was an English mathematician, physicist, astronomer, theologian, and author (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time and as a key figure in the scientific revolution
Explanation:
heres what i found hope it helps