A woman 1.6 m in height wants a plane mirror so that she can view her full height. The minimum vertical size of such a mirror is
A. 0.8 m.
B. 0.4 m.
C. 3.2 m.
D. 1.6 m.
E. impossible to say without knowing the viewing distance.
Answer: A
You might also like to view...
The force a magnetic field exerts on a current-carrying wire is maximum when the wire is oriented
A) parallel to the magnetic field. B) perpendicular to the magnetic field. C) either of these D) neither of these
For general projectile motion, the vertical component of a projectile's acceleration
A) is zero. B) remains a non-zero constant. C) continuously increases. D) continuously decreases. E) any of the above, depending on position.
The temperature scale where the numerical value is proportional to the average kinetic energy of the atoms or molecules is
a. Fahrenheit c. Kelvin b. Celsius d. none of the above
What is the inductance for an inductor with a reactance of 20
at a frequency of 60 Hz?
A. 12 H B. 19 H C. 3.0 H D. 53 mH E. 27 mH