Scientists suspect changes in the flow of the Sun's Conveyor Belt caused the Sun to be less active in 2008 and 2009 than had been seen in almost 100 years
Indicate whether the statement is true or false
TRUE
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A series LR circuit dissipates 60 W. The circuit is powered by a 120 V rms 60 Hz supply. If the current is 2.0 A rms, what is the power factor?
A. 0 B. 0.25 C. 0.50 D. 0.75 E. 1.0
The in-plane shear strength of a uniaxial composite material is approximately _________the magnitude of the transverse tensile strength.
Fill in the blank(s) with the appropriate word(s).
Two masses are suspended by cord that passes over a pulley with negligible mass. The cord also has negligible mass. One of the masses, 
has a mass of 6.0 kg and the other mass,
has a mass of 4.0 kg. The force of the cord attached to 
is
A. 47 N upward.
B. 47 N downward.
C. 33 N upward.
D. 33 N downward.
E. 15 N upward.
Which of the following statements about Mars is not true?
A) We could survive on Mars without spacesuits, as long as we brought oxygen in scuba tanks. B) We have landed robotic spacecraft on its surface. C) It has mountains that are taller than the tallest mountains on Earth. D) Its surface is frozen today, but evidence indicates it had flowing water in the distant past.