What happens when an interstellar cloud fragment shrinks?
A) It first becomes opaque.
B) Density rises.
C) Temperature rises.
D) Pressure rises.
E) All of the above.
E
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Compared to other spiral galaxies, the Milky Way is ____
a. comparable to the smallest and dimmest spirals known b. smaller and dimmer than most spirals c. very average in size and luminosity d. larger and brighter than most spirals e. comparable to the largest and brightest spirals known
Magnetic Moment: A flat coil containing 25 identical loops carries 6.4 A of current. When it is placed in a uniform magnetic field of 0.22 T that is oriented parallel to the plane of the coil, the magnetic torque on it is 3.7 N ? m.(a) What is the magnetic moment of the coil?(b) What is the area of each loop?
What will be an ideal response?
Earth's axis is tilted by ________ degrees relative to the Celestial Equator.
A. 25 B. 23.5 C. 66.5 D. 11 E. 32.5
A certain membrane has a diffusion constant 
and a thickness of
The area of the membrane is 5.00 
If the difference in the concentration across the membrane is 2.44 
then the rate of particles diffusing through the membrane is
A. 
B. 
C. 
D. 
E. 