Class Test_1_08_B_ANSWERS

Class Test_1_08_B_ANSWERS - a Determine the resultant force...

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MEM110S Class Test 1 Duration: 30 minutes 25 th February, 2008 1. Convert 0,0046 km 3 to cm 3 . Your answer must be written in scientific notation and to 3 significant digits. [ 4] [Answer: 4,60 x 10 12 cm 3 OR 0,00460 x 10 15 cm 3 ] 2. Esther says the capacity of her flash drive is 6987 Megabytes, how many Gigabytes is the capacity of the flash drive? Write your answer to 3 significant digits. [ 3] [Answer: 6,99 Gigabytes] 3. Solve for X and Y in the following equations: 0,7071 X + 0,3420 Y – 800 = 0 0,9397 Y – 0,7071 X = 0 [ 4] [Answer: X = 829,5; Y = 624,2] 4. Four forces act on a bolt as shown below.
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Unformatted text preview: a) Determine the resultant force which acts on the bolt. b) Write the resultant force in vector notation. (Your answers MUST be given to four (4) significant digits) [ 14] Answer: a): [F R = 28,06 N at 266,0 o anticlockwise from positive x-axis] OR [F R = 28,06 N at 85,97 o below negative x-axis] OR [F R = 28,06 N at 85,97 S of W] OR [F R = 28,06 N at 4,030 o W of S] b): N j N i F 99 , 27 972 , 1--= TOTAL = 25 Marks 70 o 30 o 40 o 30 o 30 N 25 N 20 N 18 N...
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