What purpose do the colors in a false-color image or map serve?
What will be an ideal response?
b. To represent different non-optical aspects of the object, such as variations in intensity of invisible radiation.
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If you were to unscrew bulb B from its socket (effectively removing it from the circuit and leaving a gap in its place), bulb A would
A. get brighter. B. become dimmer. C. remain at the same brightness. D. go out.
The weight of the insulation in a spacecraft may be more important than the space required. Show analytically that the lightest insulation for a plane wall with a specified thermal resistance is the insulation that has the smallest product of density times thermal conductivity.
GIVEN Insulating a plane wall, the weight of insulation is most significant FIND Show that lightest insulation for a given thermal resistance is that insulation which has the smallest product of density (?) times thermal conductivity (k) ASSUMPTIONS One dimensional heat transfer through the wall Steady state conditions
From what height above the surface of the earth should an object be dropped to initially have an acceleration of 0.54g? (G = 6.67 × 10-11 N ? m2/kg2, Mearth = 5.97 × 1024 kg, Rearth = 6.38 × 106 m)
A) 2300 km B) 1700 km C) 5400 km D) 2900 km
Rubber rods charged by rubbing with cat fur repel each other. Glass rods charged by rubbing with silk repel each other. A rubber rod and a glass rod charged respectively as above attract each other. A possible explanation is that
a. Any two rubber rods charged this way have opposite charges on them. b. Any two glass rods charged this way have opposite charges on them. c. A rubber rod and a glass rod charged this way have opposite charges on them. d. All rubber rods always have an excess of positive charge on them. e. All glass rods always have an excess of negative charge on them.