Distant galaxies are more likely to be irregular in shape than galaxies closer to the Milky Way
Indicate whether the statement is true or false
TRUE
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Nuclear Magnetic Resonance, NMR, is more commonly referred to as
A) MRI. B) NRA. C) CT-scan. D) MRT. E) CAT.
A concrete wall of a cold storage room measures 3.0 m high, 5.0 m wide, and 20 cm thick. The inside wall is to be covered by a layer of wood in order to reduce the rate of thermal energy flow through the wall by 90 percent
The inner surface of the wooden wall is maintained at -10°C and the outer surface of the concrete wall is at 20°C. The thermal conductivities of concrete and wood are 0.80 W/m ? K (concrete) and 0.040 W/m ? K (wood). What is the temperature difference across the layer of wood? A) 24 C° B) 25 C° C) 26 C° D) 27 C° E) 28 C°
The amount of 
Ar is one-ninth the amount of 
K. If the half-life of the latter is T, what is the rock’s age?
A. T B. T/9 C. 9T D. ln(9T) E. T/ln 9 F. Some other result (specify)
In one particular case, the limiting angle of resolution for an eye is 1.4 × 10-4 rad. What is the minimum separation between two point sources of light that the eye can distinguish if they are at a distance of 40 m from the observer?
A) 2.8 mm B) 5.6 mm C) 1.4 mm D) 8.4 mm E) 4.7 mm