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The top of a swimming pool is at ground level. If the pool is 3.00 m deep, how far below ground level does the bottom of the pool appear to be located for the following conditions? (The index of refraction of water is 1.333.)
(a) The pool is completely filled with water.
m below ground level
(b) The pool is filled halfway with water.
A cylinder with a volume of 240 cc holds an ideal gas at 82 atm pressure and a temperature of 40°C. How many moles of gas does the cylinder contain?
An alpha particle (q = +79e, m = 6.68 x10^-27kg) is fired from a distance of 10 cm at a gold nucleus (q = +79e). find the change in electric potential for the alpha partical
when the voltage is adusted so that the plates are in the same position they would be in when the 50 mg mass is placed
A sample contains radioactive atoms of two types, A and B. Initially there are three times as many A atoms as there are B atoms. Two hours later, the numbers of the two atoms are equal. The half-life of A is 0.72 hours. What is the half-life of B?
The speed of sound in air is about 660miles/hour. A passenger train approaches an unguarded railroad crossing at a constant speed of 60 miles/hour and the locomotive sounds its horn which has a frequency of 400 Hz. What frequency does a listener s..
A stiff wire 38.0cm long is bent at a right angle in the middle. One section lies along the z axis and the other is along the line y=2x in the xy plane. Determine the magnitude and direction of the total force on the wire
Two vectors of magnitude 22.6 N and 24.5 N act at right angles to each other. What is the magnitude of their resultant vector
An electron traveling at 3.00 x 104 m/s is further accelerated to an excited state by a potential difference so as to reduce its de Broglie wavelength to one-third of its original value. How much voltage is required to accomplish this? The electro..
A laboratory receives a sample of a metallic alloy composed of aluminum and magnesium. The sample is a solid cylinder with a diameter of 2 cm and a length of 5 cm. Its mass is 15.70 g. What is its density? What is its specific gravity?
If a converging lens forms a real, inverted image 14.0 cm to the right of the lens when the object is placed 48.0 cm to the left of a lens, determine the focal length of the lens
Holding a long rope by its upper end, you lower itonto a scale. Calculate the thrust exerted by the rope as it lands on the scale
In a performance test, each of two cars takes 9.3 s to accelerate from rest to 25 m/s. Car A has a mass of 1415 kg, and car B has a mass of 1900 kg. Discover the net average force that acts on (a) car A and (b) car B during the test.
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