A rope is held from one end in such a way that the lower end just touches a table. The rope is then lowered onto the table with constant velocity. The force that is needed to hold the upper end of the rope is
A) equal to the weight of the portion of the rope that is not on the table.
B) greater than the weight of the portion of the rope that is not on the table.
C) less than the weight of the portion of the rope that is not on the table but not zero N.
D) zero N.
E) Cannot be determined without additional information.
Question 2
Sound intensity is defined as
A) the loudness of a sound.
B) the sound energy passing through a unit of area.
C) the sound power per unit time.
D) the sound power per unit volume.
E) the sound energy passing through a unit of area per unit time.
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