The fact that Venus' atmosphere contains carbon dioxide was discovered:
A) by the Magellan spacecraft.
B) in early spectroscopic studies.
C) by the Venera spacecraft.
D) in radar studies.
E) through CCD imagery.
B
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A thin-walled spherical tank with a diameter of 1.5 m and wall thickness of 65 mm has an internal pressure of 20 MPa. The maximum shear stress in the wall of the tank is approximately:
(A) 58 MPa
(B) 67 MPa
(C) 115 MPa
(D) 127 MPa
During osmosis
A) the water moves into the concentrated solution faster than it leaves. B) the ions move into the concentrated solution faster than they leave. C) the water moves more slowly into the concentrated solution than it leaves. D) the ions move into the concentrated solution slower than they leave. E) all of the above
The cosmic microwave background radiation argues in favor of the Big Bang model.
Answer the following statement true (T) or false (F)
Shown here is a schematic of Young's experiment that demonstrated the interference of light. What is the role of slit S? (See pages 385–386 in your textbook for more on this experiment.)
a. It focuses the light from the broad beam source. b. It forms a pattern of waves so that the light arriving at the silt S1 is "in step" with light arriving at S2. c. It serves as an object whose image appears as a line on the screen. d. It forms an image of the light source. e. It separates the colors that are then focused by the double slit.