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A pitot static tube is used to measure the velocity of air flowing through a duct. The manometer shows a difference in head of 5 cm of water. If density of air and water are 1.13 kg/m3 and 1000
kg/m3, determine the velocity of air. Assume the coefficient of discharge of the Pitot tube as 0.98.
The bulk modulus of water is 1.9GPa. Compute the volume contraction of 65 mL of water when subjected to a pressure of 3.3 MPa.
A main water line is used to supply water to 50 houses. The
diameter of the line is 6 inches and water flows through the line at a
rate of 550 gal/min. If an equal volume of water flows into each of
the houses, determine the velocity of the water in m/s and the mas
flow rate in kg/s in a 1" diameter pipe going into a house. Use a
density of water of 998 kg/m3, 1 gal=3.788 L, 1 L=10-3 m3, 1 in=2.54
cm.
The voltmeter (V) is connected in parallel with the device. The ammeter (A) is connected in series in the circuit so that all current passing through the circuit must pass through and be measured by the ammeter.
Robert Langdon was searching for the “secret of eternal life” in the basement of the Smithsonian Museum in Washington. He used an old Illuminati’s map to complete the following path from the statue of George Washington to the statue of Donald Trump: 650 m [N37ºW], then 520 m [E], then 330 m [S30.0ºW]. He didn’t find it! So he returned empty handed. He took the shortest path to go back where he started. If it took him 1.0 hour to get back, what was his average velocity for the return trip only (in m/s)?
You are trying to hold your 550 g physics books with your hand against a vertical wall. Using a force sensor you know that the force you are applying is 10.0 N. Below the book on the floor you have placed a motion sensor. The position time graph for the book is given. Find the coefficient of kinetic friction.
