Magnetic Field of a Current Loop: Consider two current-carrying circular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the other. If the magnetic field strength at the center of the smaller loop is B, what is the magnetic field strength at the center of the larger loop?
A. 8B
B. 4B
C. 2B
D. B/2
E. B/4
Answer: D
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A hockey puck slides off the edge of a table with an initial velocity of 28.0 m/s. and experiences no air resistance
The height of the tabletop above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just before it hits the ground? A) 77.2° B) 72.6° C) 12.8° D) 12.6° E) 31.8°
The "top-down" approach to creating artificial life starts
A) in the laboratory with the raw ingredients of life, and seeks to reproduce life in much the same way that it presumably originated billions of years ago B) with a complex organism and then removes cells that are not absolutely necessary C) with existing organisms and genetically strips them down, then tries to rebuild them into new species D) with animal cells and attempts to clone them