The _________ coincides with the period known as the "little ice age" of Europe and North America. This provides one piece of evidence that suggests a link between solar activity and the amount of solar energy Earth receives
a. Maunder sunspot minimum
b. Babcock sunspot model
c. coronal hole
d. Coulomb barrier
e. weak solar force
a
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MgO is a high-temperature ceramic material that has mixed ionic and covalent bonding. Should MgO have the NaCl structure or the CsCl structure based upon ionic radii?
What will be an ideal response?
Simple Pendulum: What is the length of a simple pendulum with a period of 2.0 s?
A. 20 m B. 0.99 m C. 1.2 m D. 1.6 m E. 0.87 m
A cylinder rolls, without slipping, down an incline directly toward you. The cylinder’s angular velocity 
points in which direction?
A. Toward you B. Away from you C. To your right D. To your left E. Some other direction (specify
Which of the following is not one of the four general themes or "story lines" that underlie this course?
A) energy B) practical "household" science that you can use around your home, your car, etc. C) how we know what we know in science D) comparisons and contrasts between Newtonian and contemporary physics E) the social context of physics