If the amount of polar ice decreases, what would happen, and why?
A) cooling, because melted ice cools things off
B) warming, because more sunlight is reflected
C) cooling, because more sunlight is reflected
D) warming, because more sunlight is absorbed
D) warming, because more sunlight is absorbed
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A 100 eV electron and a 100 eV proton have equal de Broglie wavelengths
a. True b. False Indicate whether the statement is true or false
A potential energy function is given by U(x) = (3.00 J)x + (1.00 J/m2)x3. What is the force function F(x) that is associated with this potential energy function?
What will be an ideal response?
A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.The resistance of the light bulb in ohms is
a. 0.05 b. 20. c. 720 d. none of the above.
Which of the following stars is the coolest?
A) B7 B) G9 C) K7 D) K4