Which of the following best explains why sweating is important to humans in maintaining suitable body temperature?
A) Functioning of the sweat gland absorbs energy that otherwise would go into heating the body.
B) The high specific heat of water on the skin absorbs heat from the body.
C) Evaporation of moisture from the skin extracts heat from the body.
D) Moisture on the skin increases thermal conductivity, thereby allowing heat to flow out of the body more effectively.
C
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Fig. 28-6 shows two long, parallel current-carrying wires. The wires carry equal currents I1 = I2 = 20 A in the directions indicated and are located a distance d = 0.5 m apart. Calculate the magnitude and direction of the magnetic field at a point located at an equal distance d from each wire.
a. 4?T upward b. 8?T upward c. 4?T to the right d. 8?T downward e. 4?T downward
A star with a right ascension of 2.6 hrs will rise 2.6 hours after the vernal equinox
Indicate whether the statement is true or false
The graphs below show the phasors ?Vmax and Imax for five RLC series circuits. The solid arrows represent the voltage phasors, ?V, and the dashed arrows represent the current phasors, Imax. Which graph represents a circuit where the inductive reactance is greater than the capacitive reactance?
a.
b.
c.
The weight of a body on the moon is _______________ the weight of the same body on earth
Fill in the blank(s) with correct word