By what factor is the total pressure greater at a depth of 900 m in water than at the surface where pressure is one atmosphere? (water density = 1.0 × 10^3 kg/m3, 1 atmosphere pressure = 1.01 × 10^5 N/m2, and g = 9.8 m/s2)
a. 8.9
b. 88
c. 98
d. 78
e. 8 800
b
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Vectors A , B, C and have magnitudes 6, 11, and 22. When these vectors are added, what is the least possible magnitude of their addition?
A. 25 B. 15 C. 5 D. 3
You have a P-V diagram for a device going through a cyclic process forming a closed loop on the diagram. How can you tell from the diagram whether the device is acting as a heat engine and not as a refrigerator?
a. The loop is longer than it is high which means it is acting as a refrigerator. b. The loop is higher than it is long which means it is acting as a refrigerator. c. The loop proceeds clockwise which means it is acting as a heat engine. d. The loop proceeds counterclockwise which means it is acting as a heat engine.
A single slit illuminated with a 500 nm light gives a diffraction pattern on a far screen. The 5th minimum occurs at 7.00° away from the central maximum. At what angle does the 18th minimum occur?
A) 26.0° B) 1.94° C) 5.05° D) 0.44°
Hurricanes are more likely to form near
A) warm waters where the air is humid. B) warm waters where the air is dry. C) cold bodies of water where the air is humid. D) cold bodies of water where the air is dry.