Find the magnetic field at point p on the axis of a tightly wound solenoid (helical coil) consisting of n turns per unit length wrapped around a cylindrical tube of radius a and carrying current i (fig. 5.25). express your answer in terms of θ1 and θ2 (it’s easiest that way). consider the turns to be essentially circular, and use the result of ex. 5.6. what is the field on the axis of an infinite solenoid (infinite in both directions)

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

radial fractures in a piece of glass look most like which of the following?

a. spokes of a wheel

b. a circle

c. a zig zag

d. none of the above

the correct answer is a. spokes of a wheel

hope this (: