1. One arm of a glass U-tube is open to the atmosphere, whereas the other vertical arm is connected to a gas supply. The difference in levels of mercury (density = 13.6 g cm-3) between the vertical arms of the U-tube manometer is h = 1 cm. If the atmospheric pressure is 760 mm Hg and the gravitational acceleration is 9.8 m s-2, then the pressure of the gas is about   1.014 × 107dynes cm-2   1.047 × 104dynes cm-2   1.333 × 104dynes cm-2   1.026 × 106dynes cm-2   Hint Half-n-half Clue   2. 7 bars = _______ millibars   7000   0.007   0.7   70   Half-n-half Clue   3. The average atmospheric pressure at sea level is 760 mm Hg. If the relative density of mercury is 13.6, then the air pressure can support _______ m of vertical length of a water column at sea level.   10.336   0.76   101396   10336   Half-n-half Clue   4. 7 bars = _______ Pascals   7e-05   0.0007   700000   70000   Half-n-half Clue   5. What instrument is used for measuring atmospheric pressure?   Hydrometer   Hygrometer   Barometer   Sphygmomanometer   Half-n-half Clue   6. The SI unit of pressure is   Pascal   Newton   Watt   Joule   Half-n-half Clue   7. 1 Pascal = 1 _______ m-2   Newton   Joule   Dyne   Erg   Half-n-half Clue