13. A copper wire has a diameter of 0.03196 inches. What length of wire (in meters) is there on a 2.00 pound spool of wire? The density of copper is 8.92 g/cm³. (volume of a cylinder is ¹h)
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- How many cubic meters of helium are required to lift a balloon with a 400-kg payload to a height of 8 000 m? Take He = 0.179 kg/m3. Assume the balloon maintains a constant volume and the density of air decreases with the altitude z according to the expression air = 0ez/8, where z is in meters and 0 = 1.20 kg/m3 is the density of air at sea level.An aluminum cylinder, with a mass of 51.5 grams, a diameter of 2.52 cm, and a height of 3.75 cm, and its density equal (writing the unit with the number):(1) a. Gold is sold by the troy ounce (31.103 g). What is the volume (in cm3) of 2 troy ounces of pure gold? cm3 b. Mercury is commonly supplied in flasks containing 34.5 kg (about 76 Ib). What is the volume in liters of this much mercury? C. A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density (in g/cm?) of a 200 g rock that displaces 81.0 cm³ of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedes' principle.) g/cm3
- 1. A bottle of beer contains 12 fluid ounces (fl oz). What is the volume inquarts (given that 1 qt = 32 fl oz).An auditorium measures 55.0 m x 28.0 m x 16.0 m. The density of air is 1.28 kg/m3. What are a. the volume of the room in cubic feet and b. the weight of air in the room in pounds? (answer must contain 3 significant figures)An iron casting containing a number of cavities weighs 5.75E+3 N in air and 4.01E+3N in water. What is the total volume of all the cavities in the casting? The density of iron (that is, a sample with no cavities) is 7.87 g/cm3. Number i Units
- The density of gold is 19.3 g>cm3. What is this value in kilograms per cubic meter?Alloys of gold are rated in karats, a dimensionless unit that is used to indicate the proportion of gold by weight in a gold-containing alloy. If an alloy is one part in twenty-four pure gold, then it is classified as one karat gold. The density of gold is 19.3 ✕ 103 kg/m3. Determine the volume of gold in a 13.0 karat gold necklace that has a weight of 1.83 N.Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber a) If the sample of gold,with a mss of 27.63g, is pressed into a leaf of 2 um thickness, what is the area of the leaf? b)If instead,the gold is drawn out into a cylindrical fiber of radius 3 um , what is the lenght of the fiber ?
- Assuming biological substances are 100% water, estimate the mass of a human kidney. Take a kidney to be roughly a sphere with a radius of 4 cm. kgAn iron casting containing a number of cavities weighs 5.20E+3 N in air and 4.10E+3 N in water. What is the total volume of all the cavities in the casting? The density of iron (that is, a sample with no cavities) is 7.87 g/cm3. Number____ units:Gold is sold by the troy ounce (31.103 g). What is the volume (in cm3) of 9 troy ounces of pure gold?