The diagram below and to the left shows an electron moving to the right in the plane of the drawing. What is the direction of the electron’s magnetic field at points a through g? Answer using the closest choice given on the right (to indicate a double-letter using the back of the book, point to the letter with two fingers). 
A.A
B.B
C.C
D.D
E. Toward the viewer
F. Away from the viewer
T. The field is zero.
F. Away from the viewer
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The ratio of the kinetic energy of object A to the kinetic energy of the object B is 2:1. The mass of object A is 2.0 kg and the mass of object B is 4.0 kg. If object A has a speed of 4.0 m/s, what is the speed of object B?
A) 8.0 m/s B) 6.0 m/s C) 4.0 m/s D) 1.4 m/s E) 2.0 m/s
Show that in the limit ?x ? 0, the difference equation for one-dimensional steady conduction with heat generation,is equivalent to the differential equation.
GIVEN • One dimensional steady conduction with heat generation SHOW (a) In the limit of small ?x, the difference equation is equivalent to the differential equation
You have available lenses of focal lengths 2.0 cm, 4.0 cm, 8.0 cm, and 16.0 cm. (a) If you were to use any two of these lenses to build a telescope, what is the maximum magnification you could achieve?
(b) If you were to use any two of these lenses to build a telescope, what is the lens separation for the maximum magnification telescope? What will be an ideal response?
Work Done by a Gas: A gas expands from an initial volume of 0.040 m3 and an initial pressure of 210 kPa to a final volume of 0.065 m3 while its temperature is kept constant. How much work is done by the gas? (R = 8.31 J/mol ? K)
A. 3.7 kJ B. 4.1 kJ C. 5.3 kJ D. 5.6 kJ E. 7.9 kJ