If light of wavelength 700 nm is sent through a slit of width of 5.0 ?m, at what angle from the central maximum is the 4th order minimum?
A)
90°
B)
34°
C)
39°
D)
8°
E)
68°
B
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If the scalar product of two vectors, 
and 
, is equal to ?3.5, if 
align="middle" />, and the angle between the two vectors when they are drawn starting from the same point is equal to 130°, what is the magnitude of ?
A. 2.1
B. 2.5
C. 2.3
D. 2.7
E. 3.1
A nonuniform 2.0-kg rod is 2.0 m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that passes through one end of the rod. The rotational inertia of the rod about this axis is 4.0 kg?m2. The center of mass of the rod is 1.2 m from the axis. If the rod is released from rest in the horizontal position, what is its angular speed as it swings through the vertical position?
A. 3.4 rad/s B. 4.4 rad/s C. 4.3 rad/s D. 5.8 rad/s E. 6.8 rad/s
An ac generator with peak voltage 100 volts is placed across a 10-? resistor. What is the average power dissipated?
a. 100 W b. 150 W c. 500 W d. 1000 W e. 2000 W
Exhibit 14-1
A square of side 
is removed from one corner of a square sandwich that has sides of length L. The center of mass of the remainder of the sandwich moves from C to C'.
?
?
Use this exhibit to answer the following question(s).
Refer to . The displacement of the y coordinate of the center of mass (from C to C') is
A.
.B.
.C.
.D.
.E.
.