38. The wagon wheel has a diameter of 28 inches and an angle of 30° between the spokes. What is the length of the arc s (to the nearest hundredth of an inch) between two adjacent spokes? [Hint: use the formula s = re to get the arc length] A. 7.37 inches B. 7.33 inches C. 3.77 inches D. 3.33 inches
38. The wagon wheel has a diameter of 28 inches and an angle of 30° between the spokes. What is the length of the arc s (to the nearest hundredth of an inch) between two adjacent spokes? [Hint: use the formula s = re to get the arc length] A. 7.37 inches B. 7.33 inches C. 3.77 inches D. 3.33 inches
Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Saeed Moaveni
Chapter7: Length And Length-related Variables In Engineering
Section: Chapter Questions
Problem 42P
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Kindly please answer numbers 38-40 questions. Since your policy is at-least maximum with 3 per sub questions is okay. This is of my reviewer.
![38. The wagon wheel has a diameter of 28 inches and an angle of
30° between the spokes. What is the length of the arc s (to
the nearest hundredth of an inch) between two adjacent
spokes? [Hint: use the formula s = re to get the arc
length]
A. 7.37 inches.
C. 3.77 inches
D. 3.33 inches.
B. 7.33 inches
39. A ramp meter operates during the morning peak period. Ramp
meter cycles vary with time as shown in the table below.
The metering scheme allows one vehicle per cycle to pass.
the signal. The table below gives the number of vehicles
demanding service on the ramp during particular time
intervals, the cumulative demand for the ramp for the
morning peak, and the ramp meter cycle for each interval.
What are the service rates for meter cycle 12, 10, and 6?
Time period
Cumulative Meter cycle,
volume
15-min
volume
S
6:30 6:45
75
75
6
6:45 - 7:00
100
175
10
7:00 7:15
125
300
12
7:15 7:30
110
410
12
7:30
7:45
80
490
10
7:45
8:00
65
555
6
A. 85, 65, 145 veh
B. 150, 90, 75 veh
C. 145, 65, 85 veh
D. 75, 90, 150 veh
40. The formula log (1-k) = -0.3/H models the relationship
between the half-life H of a radioactive material and its.
rate of decay k. Find the rate of the decay of the iodine
isotope 1-131 if its half-life is 8 days. Round to four
decimal places.
A. 0.1827
C. 0.0627
D. 0.0827
B. 0.3827
41. An industrial engineer has found that when she takes a
sample of size 5 of a product, 90% of the time there are no
defectives in the sample, 3% of the time there is 1
defective, 2% of the time there are 2 defectives, 2% of the
time there are 3 defectives, 2% of the time there are 4
defectives, and 1% of the time there 5 defectives. What is
the probability of taking a sample that has least 3
defectives in the 5?
A. 7%
B. 5%
C. 9%
D. 15%
42. A circle has its center at (3,
line 3x + 4y - 26= 0. Compute
circle.
-27). It is tangent to the
the point of tangency of the
C. (6, 2)
A. (3, 4)
B. (2, 6)
D. (3, 6)
43. A rectangular swimming pool is 12 meters long and 8 meters.
wide. A tile border of uniform width is to be built around.
the pool, using 120 square meters of tile. The tile is from
a discounted stock (so no additional materials are.
available), and all 120 square meters are to be used. How
wide should the border be?
A. 5.4 meters
C. 3.4 meters
D. 4.4 meters.
B. 2.4 meters](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd7da6932-b078-4567-87b7-2168b6f1031f%2F72ee2aa6-9ce1-4414-be57-9b64fd0e3319%2Fmt5blkn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:38. The wagon wheel has a diameter of 28 inches and an angle of
30° between the spokes. What is the length of the arc s (to
the nearest hundredth of an inch) between two adjacent
spokes? [Hint: use the formula s = re to get the arc
length]
A. 7.37 inches.
C. 3.77 inches
D. 3.33 inches.
B. 7.33 inches
39. A ramp meter operates during the morning peak period. Ramp
meter cycles vary with time as shown in the table below.
The metering scheme allows one vehicle per cycle to pass.
the signal. The table below gives the number of vehicles
demanding service on the ramp during particular time
intervals, the cumulative demand for the ramp for the
morning peak, and the ramp meter cycle for each interval.
What are the service rates for meter cycle 12, 10, and 6?
Time period
Cumulative Meter cycle,
volume
15-min
volume
S
6:30 6:45
75
75
6
6:45 - 7:00
100
175
10
7:00 7:15
125
300
12
7:15 7:30
110
410
12
7:30
7:45
80
490
10
7:45
8:00
65
555
6
A. 85, 65, 145 veh
B. 150, 90, 75 veh
C. 145, 65, 85 veh
D. 75, 90, 150 veh
40. The formula log (1-k) = -0.3/H models the relationship
between the half-life H of a radioactive material and its.
rate of decay k. Find the rate of the decay of the iodine
isotope 1-131 if its half-life is 8 days. Round to four
decimal places.
A. 0.1827
C. 0.0627
D. 0.0827
B. 0.3827
41. An industrial engineer has found that when she takes a
sample of size 5 of a product, 90% of the time there are no
defectives in the sample, 3% of the time there is 1
defective, 2% of the time there are 2 defectives, 2% of the
time there are 3 defectives, 2% of the time there are 4
defectives, and 1% of the time there 5 defectives. What is
the probability of taking a sample that has least 3
defectives in the 5?
A. 7%
B. 5%
C. 9%
D. 15%
42. A circle has its center at (3,
line 3x + 4y - 26= 0. Compute
circle.
-27). It is tangent to the
the point of tangency of the
C. (6, 2)
A. (3, 4)
B. (2, 6)
D. (3, 6)
43. A rectangular swimming pool is 12 meters long and 8 meters.
wide. A tile border of uniform width is to be built around.
the pool, using 120 square meters of tile. The tile is from
a discounted stock (so no additional materials are.
available), and all 120 square meters are to be used. How
wide should the border be?
A. 5.4 meters
C. 3.4 meters
D. 4.4 meters.
B. 2.4 meters
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