What are vegas diameter and effective temperature
The star Vega has a measured angular diameter of 3.24 mas (milliarcseconds) and a flux of 2.84 x 10-8 W/m2. Its distance is 8.1 pc. What are Vega's diameter and effective temperature?
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A bullet weighing 50 grams and traveling at 200 m/s is shot into a stationary block of wood weighing 4 kg where it lodges. Determine how much each of the following changes from before the bullet strike to after the bullet stops for the system defi
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Air at 110 kPa and 50 C flows upward through a 6-cm-diamter inclined duct at a rate of 45 L/s. The duct diameter is then reduced to 4 cm through a reducer. The pressure change across the reducer is measured by a water manometer.
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