6 questions use excell and word .docx attached

3) Below is a collection of data for an iron-concentration thermocouple. Temperature is in degrees Celsius, and the electromotive force (emf) is in millivolts.

tempter T, C

voltage, EMF, mV

50

2.6

100

6.7

150

8.8

200

11.2

300

17

400

22.5

500

26

600

32.5

700

37.7

800

41

900

48

1000

55.2

  1. plot the data on excel with the voltage as the independent

  2. using the method of selected points, find the equation of the line using a computer.


4) there are design specifications for the minimum sight distance (distance to see an approaching vehicle measured along the roadway from the intersection of the two roadways) that a driver stopped at a stop sign must have to safely enter a roadway where vehicles do not stop. Values in the table below are for safe entry to cross the roadway (not to turn onto the other roadway but to cross) where vehicles do not stop.

major roadway design speed (mph)

sight distance Ft

25

240

30

290

35

335

40

385

45

430

50

480

60

575

65

625

70

670

75

720

  1. plot the graph with design speed as the independent variable.

  2. determine the equation of

  3. the relationship using the method of selected points.

  4. determine the equation of the relationship using computer-assisted methods.

  5. predict the slight distance required at 55 mph.


5) a spring was tested in Chicago last Thursday. The test of the spring, (X-19), produced the fallowing data.

defliction D, mm

load K kN

2.25

35

12

80

20

120

28

160

35

200

45

250

55

300

  1. plot the data on rectangular graph and determine the equation that expresses the deflation to be expected under a given load. Use both the method of selected points and computer.

  2. predict the load required to produce a deflation of 75 mm.

  3. what load would be expected to produce a deflation of 120 mm.


6) an AMC ferns was tested 45 days ago in your home town to determine the heat generated, expressed in thousands of British thermal units per cubic foot of furnace volume at varying temperatures. The results are shown in the table.

heat released H, 10^3 Btu/ft^3

teampiture T, F

0.2

172

0.6

241

392

483

608

20

812

40

959

80

1305

  1. plot the data on log-log paper (or excel) with angular velocity as the independent Vrabel.

  2. using the methods of selected points, determine the equation that best fits the data.

  3. plot the graph in excel and determine the equation of the line.


7) the capacity of a 20-cm screw conveyor that is moving dry corn is expressed in liters per second and the conveyor speed in revolutions per minute. A test was conducted in Rockland IL, on conveyer model JD172 last week. The results of the test are given below.

capacity C, L/s

angular velocity, V r/min

3.01

10

6.07

21

15

58.2

30

140.6

50

245

80

410

110

521

  1. plot the data on log-log paper (or excel) with angular velocity as the independent Vrabel.

  2. determine the equation that expresses capacity as a function of angular velocity using the method of selected points.


20) according to the united states department of labor, the consumer price index for several household expense items are shown in the table below. The time period 1982-1984 is established as the basis with an index of 100.

year

food

apparel

housing

transportation

medical care

total

1995

148.4

132

148.5

139.1

220.5

152.4

1996

153.3

131.7

152.8

143

228.2

156.9

1997

157.3

132.9

156.8

144.3

234.6

160.5

1998

160.7

133

160.4

141.6

242.1

163

1999

164.1

131.3

165.9

144.4

250.6

166.6

2000

167.8

129.6

169.6

153.3

260.8

172.2

2001

173.1

127.3

176.4

154.3

272.8

177.1

2002

176.2

124

180.3

152.9

285.6

179.9

2003

180

120.9

184.8

157.6

297.1

184

2004

186.2

120.4

189.5

163.1

310.1

188.9

(a) using excel plot all the data.

(b) describe what the plotted information suggest to you ??