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10 Nov 2019

the strip is w wide, h high and l very long

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Rod on Rails Two The conducting rod shown in Fig. 31-42 has alength L and is being pulled along horizontal, frictionless,conducting rails at a constant velocity v. The rails are connectedat one end with a metal strip. A uniform magnetic field , directedout of the page, fills the region in which the rod moves. Assumethat L = 17 cm, v = 6.4 m/s, and B = 1.0 T.

Figure 31-42
(a) What is the magnitude of the emf induced in the rod?
V
(b) What is the magnitude and direction of the current in theconducting loop? Assume that the resistance of the rod is 0.40 andthat the resistance of the rails and metal strip is negligiblysmall.
A
(c) At what rate is thermal energy added to the rod?
W
(d) What magnitude of force must be applied to the rod by anexternal agent to maintain its motion?
N
(e) At what rate does this external agent do work on the rod?
W Compare the answer for (e) with the answer to (c).


Section 31.6 Induction and Energy Transfers


DIAGRAM

http://img809.imageshack.us/i/3154.gif/

The figure shows a rectangle that is approximately l=6 cm and h = 1 cm high.

(a) Draw a rectangular strip along the rectangular region showing a small increase in length.

(b) Draw a rectangular strip along the rectangular region showing a small increase in height.

(c) Use the results in parts (a) and (b) to identify the measurement that has more effect on area A of the rectangle.

(d) Verify your answer in part (c) analytically by comparing the value of dA when dl = 0.01 and when dh= 0.01.

 

1. Consider a particle of mass m in a one- dimensional box -L< x < +L as shown below.
The potential of the system is given as
0 -L < x < +L
V =
8 x <-L and x > +L
(a) Determine the energy eigenvalue of the particle.
(b) Show that the expectation value of the momentum

= 0.
(c) Determine the expectation value of the kinetic energy .
(d) What is the energy eigen values if the boundary of thebox
is shifted to -L < x < +L/2

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