Your vocal cords are used to produce all the sounds you make while speaking
Indicate whether the statement is true or false
F
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An refrigerator keeps food in the freezer portion at 
and dumps excess heat into the kitchen, whose temperature is 
If the refrigerator has half the coefficient of performance of an ideal reversible refrigerator, and if its motor can supply 250W of power, what is the rate of heat flow into the kitchen?
A. 950W B. 910W C. 625W D. 150W
Why do prominences appear pink during a solar eclipse?
a. Because of the high temperature of the gases b. Because the photosphere being blocked out c. Because of the placement of the lunar disk over the Sun d. Because the prominences interact with Earth's magnetic field e. Because different gases are being combined in the chromosphere
A 120-m long metal wire having a resistivity of 1.68 × 10-8 ? ? m has a resistance of 6.0 ?. What is the diameter of the wire?
A) 0.065 mm B) 0.65 mm C) 0.65 cm D) 0.65 m
One product of photosynthesis is
a. hydrogen. b. oxygen. c. carbon dioxide. d. methane.