course phy 231 This ends the first assignment.???~???P??w??
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15:11:06 `q001. There are 10 questions and 5 summary questions in this assignment. What is surface area of a rectangular solid whose dimensions are 3 meters by 4 meters by 6 meters?
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RESPONSE --> 108 confidence assessment: 2
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15:13:06 `q002. What is the surface area of the curved sides of a cylinder whose radius is five meters and whose altitude is 12 meters? If the cylinder is closed what is its total surface area?
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RESPONSE --> 120 confidence assessment: 2
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15:15:08 `q003. What is surface area of a sphere of diameter three cm?
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RESPONSE --> 36 confidence assessment: 3
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15:18:04 `q004. What is hypotenuse of a right triangle whose legs are 5 meters and 9 meters?
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RESPONSE --> 106 confidence assessment: 2
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15:20:13 12-31-2007 15:20:13 `q005. If the hypotenuse of a right triangle has length 6 meters and one of its legs has length 4 meters what is the length of the other leg?
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NOTES ------->
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assignment #003 003. Misc: Surface Area, Pythagorean Theorem, Density qa areas volumes misc 12-31-2007
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16:16:15 `q005. If the hypotenuse of a right triangle has length 6 meters and one of its legs has length 4 meters what is the length of the other leg?
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RESPONSE --> 52 confidence assessment: 2
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16:23:21 `q006. If a rectangular solid made of a uniform, homogeneous material has dimensions 4 cm by 7 cm by 12 cm and if its mass is 700 grams then what is its density in grams per cubic cm?
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RESPONSE --> 2.08 cubic cm confidence assessment: 2
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16:32:59 `q007. What is the mass of a sphere of radius 4 meters if its average density is 3,000 kg/cubic meter?
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RESPONSE --> 750 confidence assessment: 0
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16:37:30 `q008. If we build a an object out of two pieces of material, one having a volume of 6 cm^3 at a density of 4 grams per cm^3 and another with a volume of 10 cm^3 at a density of 2 grams per cm^3 then what is the average density of this object?
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RESPONSE --> 17 confidence assessment: 0
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16:39:26 `q009. In a large box of dimension 2 meters by 3 meters by 5 meters we place 27 cubic meters of sand whose density is 2100 kg/cubic meter, surrounding a total of three cubic meters of cannon balls whose density is 8,000 kg per cubic meter. What is the average density of the material in the box?
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RESPONSE --> confidence assessment: 2
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16:39:49 `q010. How many cubic meters of oil are there in an oil slick which covers 1,700,000 square meters (between 1/2 and 1 square mile) to an average depth of .015 meters? If the density of the oil is 860 kg/cubic meter the what is the mass of the oil slick?
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RESPONSE --> confidence assessment: 2
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16:42:09 `q011. Summary Question 1: How do we find the surface area of a cylinder?
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RESPONSE --> 2pi (radius)r (height)h + 2pir^2 confidence assessment: 3
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16:43:29 `q012. Summary Question 2: What is the formula for the surface area of a sphere?
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RESPONSE --> S = 4pir^2 confidence assessment: 3
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16:44:50 `q013. Summary Question 3: What is the meaning of the term 'density'.
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RESPONSE --> density is mass per unit volume d=m/v confidence assessment: 3
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16:48:55 `q014. Summary Question 4: If we know average density and mass, how can we find volume?
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RESPONSE --> mass/density=v confidence assessment: 2
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16:50:04 `q015. Explain how you have organized your knowledge of the principles illustrated by the exercises in this assignment.
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RESPONSE --> i used my knowlede of density, mass and volume and there formulas to figure out the answers to the problems presented confidence assessment: 2
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???????????P?? assignment #001 001. Areas qa areas volumes misc 12-31-2007
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16:55:05 `q001. There are 11 questions and 7 summary questions in this assignment. What is the area of a rectangle whose dimensions are 4 m by 3 meters.
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RESPONSE --> confidence assessment:
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16:55:28 `q001. There are 11 questions and 7 summary questions in this assignment. What is the area of a rectangle whose dimensions are 4 m by 3 meters.
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RESPONSE --> 4l*3w=12 confidence assessment: 3
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16:58:09 `q002. What is the area of a right triangle whose legs are 4.0 meters and 3.0 meters?
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RESPONSE --> 6=1/2base*height confidence assessment: 3
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16:59:32 `q003. What is the area of a parallelogram whose base is 5.0 meters and whose altitude is 2.0 meters?
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RESPONSE --> 10.0=base*height confidence assessment: 3
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17:00:35 `q004. What is the area of a triangle whose base is 5.0 cm and whose altitude is 2.0 cm?
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RESPONSE --> 5=1/2base*height confidence assessment: 3
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17:04:58 `q005. What is the area of a trapezoid with a width of 4.0 km and average altitude of 5.0 km?
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RESPONSE --> 20 confidence assessment: 3
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17:05:58 `q006. What is the area of a trapezoid whose width is 4 cm in whose altitudes are 3.0 cm and 8.0 cm?
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RESPONSE --> 28 confidence assessment: 3
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17:07:12 `q007. What is the area of a circle whose radius is 3.00 cm?
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RESPONSE --> 28.27 = pir^2 confidence assessment: 3
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17:13:32 `q008. What is the circumference of a circle whose radius is exactly 3 cm?
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RESPONSE --> 3 confidence assessment: 2
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17:15:22 `q009. What is the area of a circle whose diameter is exactly 12 meters?
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RESPONSE --> 144 confidence assessment: 3
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17:17:07 `q010. What is the area of a circle whose circumference is 14 `pi meters?
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RESPONSE --> 196 confidence assessment: 1
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17:19:00 `q011. What is the radius of circle whose area is 78 square meters?
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RESPONSE --> 19104 confidence assessment: 0
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17:20:16 `q014. Summary Question 3: How do we calculate the area of a parallelogram?
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RESPONSE --> multiply base by height to get the area confidence assessment: 3
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17:21:58 `q015. Summary Question 4: How do we calculate the area of a trapezoid?
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RESPONSE --> 1/2 ?h ?area + base confidence assessment: 3
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17:22:38 `q016. Summary Question 5: How do we calculate the area of a circle?
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RESPONSE --> area of circle is Pi ?r2 confidence assessment: 3
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17:24:38 `q017. Summary Question 6: How do we calculate the circumference of a circle? How can we easily avoid confusing this formula with that for the area of the circle?
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RESPONSE --> pi *diameter of a cricle. to differentiate between the area and circumfereance of a circle, is that area involves radius while the circumference deals with the diameter confidence assessment: 3
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17:26:13 `q018. Explain how you have organized your knowledge of the principles illustrated by the exercises in this assignment.
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RESPONSE --> i tried to use what i know in finding an area of an object. either using its height, radius, base, altitude, etc confidence assessment: 3
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