A 1.5m long dowel (a cylindrical rod) is pivoted about the end so that it is a pendulum of sorts - it can freely swing in a vertical plane. The dowel has a diameter of 2.0cm, and its density is 3.2 
When it is positioned in its swing such that its angle with the vertical is 22.5 degrees, what is the torque on the rod about the pivot due to its weight?
A. 17Nm
B. 42Nm
C. 11Nm
D. 10Nm
E. 44Nm
F. 41 Nm
B. 42Nm
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, estimate the age of the universe, in years. (1 ly = 9.46 × 1015 m)
A. 15 thousand years B. 15 million years C. 15 billion years D. 50 billion years
According to Kepler’s First Law, all planets have orbits about the Sun that are
A. circles B. squares C. parabolas D. ellipses
What resistance added to 633. ? in parallel would produce an equivalent 205. ??
What will be an ideal response?
When looking at your own reflection in a plane mirror, you notice that you can’t see all of your body. So, in order to see a larger fraction of your body
A. Can do nothing about it with this mirror B. Need to raise or lower the mirror C. Need to get farther from the mirror D. Need to tilt the mirror E. Need to get closer to the mirror