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1. At 60°C the surface tension of water is 0.0662 N/m and that of mercury is 0.47 N/m. Determine the capillary height changes in these two fluids when they are in contact with air in a glass tube of diameter 0.55 mm. Contact angles are 0° for water and 130° for mercury.
2. Determine the diameter of the glass tube necessary to keep the capillary-height change of water at 30°C less than 1 mm.
an engine performs a total of 15000 j of work in one minute: what is its power output in kilowatts and in horsepower
you are driving at a constant speednbspon a straight highway that passes under an overpass. at time whennbspyour car
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.250microC on each plate. The plates are 0.500mm apart. What is the surface charge density on each plate
A coil of inductance 81 mH and unknown resistance and a 0.84 µF capacitor are connected in series with an alternating emf of frequency 875 Hz. what is the resistance of the coil
You measure an electric field of 1.39×106N/C at a distance of 0.169m from a point charge. What is the electric flux through the surface of a sphere that has this charge at its center and that has radius 0.169m
Explain in key words what the fundamental difference is between the water circulation in the ocean and in a large and deep freshwater lake (assume that it has the same dimensions as the ocean).
A car, in overtaking trailer, uniformly accelerated its speed from 40 kph to 90 kph in 8 seconds. Calculate the distance traveled during the period of acceleration.
The basket is tied to a rope and it is stopped by a fixed clamp when it is falling down, I know there is initial KE however how come initial work is negative. Is not force and displacement are in the same direction, so work must be positive?
A slingshot fires a pebble that is in the air for 5.30seconds. It lands 73.0m away from where it was initially shot. Determine the initial horizontal and vertical components of the velocity
Suppose we allow two mass in a one-dimensional diatomic lattice to become equal. What happens to the frequency gap? Is this answer expected? Compare the results with those of the monatomic lattice.
A solid Cylinder with a mass of 10 kg is attached to an inclined plane.A 2kg block is attached to a string that is wrapped around the cylinder. Find the angular acceleration of the cylinder
An airfoil is being tested at an altitude of 34000 ft, standard atmosphere, and a speed of 600 knots. At a specific point "A.'' the pressure is measured to be at eighty-seven percent (87%) of the free tream pressure. Determine the local velocity a..
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