D-2 A Local Application of Local Time Most people will have never actually used local time,...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
D-2 A Local Application of Local Time Most people will have never actually used local time, or even be aware of it. But prior to 1883 when the United States adopted a Standard Time system, most U.S. cities and towns observed the local time that ex- isted at those individual places. Noon was when the sun was due-south of the town square, or some other land- mark. Everybody's time was different. The advent of railroads gave rise to railroad time as private companies strove to give order to scheduling. That evolved into U.S. Standard Time, and in 1884 World Standard Time was accepted. The next portion of this exercise, D-3, will introduce World Standard Time, the system with which the world operates. But before that, it is an interesting exercise to apply local time to the short distance between local towns. Small time differences actually exist across one city, and even across campus, and even across the room-very small differences to be sure. Let us hypothesize: Hypothesis: It is a measurable amount of time later on the east side of this classroom compared to the west side. Checking the Hypothesis From Exercise B-4(g) we know that 1° longitude is equal to 53 miles at 40° N latitude. (Latitude 40° N is about mid-latitude for the U.S. and would be a good approximation for the entire 48 contiguous states.) This means that at 40° N a 53-mile east-west distance will differ by 4 minutes in local time. This relationship can be stated in other intervals that are useful: Time 4 minutes (1° longitude) .075 minutes (approx.) = 4.5 seconds (4+53 = .075) .085 seconds (4.5+ 52.8= .085) (5,280 feet = 1 mile) seconds (compute this last equivalent) 1 foot Example A The local time difference for two nearby towns with a 20-mile east-west separation will be about 1.5 minutes or 1 minute 30 seconds. Solution: 20 miles X 4.5 seconds Distance (at 40° N) 53 miles 1 mile. 100 feet 90 seconds= 1.5 minutes (North-South separation will have no bearing on time difference; time is a function of longitude, not of latitude.) Example B The local time that exists 1,850 feet down the road due east of you is 1.57 seconds later than your time. Solution: 18.5 (100's of feet) x .085 seconds= 1.57 seconds (a) How much time separates two towns that have an east-west separation of 70 miles? Solution: (Show solution, as in Examples A and B above.) (b) If your local time were 1:30 P.M., what would the local time be 40 miles to the east of you? Solution: (c) How much would local time vary across town 8.5 miles to the west? Would it be earlier, or later there? Solution: Name Date Section (d) If your campus covers 1500 feet east and west, there will be an actual local time difference across cam- pus, if accurately measured by the sun. How much time? Solution: D-2 A Local Application of Local Time Most people will have never actually used local time, or even be aware of it. But prior to 1883 when the United States adopted a Standard Time system, most U.S. cities and towns observed the local time that ex- isted at those individual places. Noon was when the sun was due-south of the town square, or some other land- mark. Everybody's time was different. The advent of railroads gave rise to railroad time as private companies strove to give order to scheduling. That evolved into U.S. Standard Time, and in 1884 World Standard Time was accepted. The next portion of this exercise, D-3, will introduce World Standard Time, the system with which the world operates. But before that, it is an interesting exercise to apply local time to the short distance between local towns. Small time differences actually exist across one city, and even across campus, and even across the room-very small differences to be sure. Let us hypothesize: Hypothesis: It is a measurable amount of time later on the east side of this classroom compared to the west side. Checking the Hypothesis From Exercise B-4(g) we know that 1° longitude is equal to 53 miles at 40° N latitude. (Latitude 40° N is about mid-latitude for the U.S. and would be a good approximation for the entire 48 contiguous states.) This means that at 40° N a 53-mile east-west distance will differ by 4 minutes in local time. This relationship can be stated in other intervals that are useful: Time 4 minutes (1° longitude) .075 minutes (approx.) = 4.5 seconds (4+53 = .075) .085 seconds (4.5+ 52.8= .085) (5,280 feet = 1 mile) seconds (compute this last equivalent) 1 foot Example A The local time difference for two nearby towns with a 20-mile east-west separation will be about 1.5 minutes or 1 minute 30 seconds. Solution: 20 miles X 4.5 seconds Distance (at 40° N) 53 miles 1 mile. 100 feet 90 seconds= 1.5 minutes (North-South separation will have no bearing on time difference; time is a function of longitude, not of latitude.) Example B The local time that exists 1,850 feet down the road due east of you is 1.57 seconds later than your time. Solution: 18.5 (100's of feet) x .085 seconds= 1.57 seconds (a) How much time separates two towns that have an east-west separation of 70 miles? Solution: (Show solution, as in Examples A and B above.) (b) If your local time were 1:30 P.M., what would the local time be 40 miles to the east of you? Solution: (c) How much would local time vary across town 8.5 miles to the west? Would it be earlier, or later there? Solution: Name Date Section (d) If your campus covers 1500 feet east and west, there will be an actual local time difference across cam- pus, if accurately measured by the sun. How much time? Solution:
Expert Answer:
Answer rating: 100% (QA)
Question 1 Time separation solutions a How much time separates two towns se... View the full answer
Related Book For
Smith and Roberson Business Law
ISBN: 978-0538473637
15th Edition
Authors: Richard A. Mann, Barry S. Roberts
Posted Date:
Students also viewed these law questions
-
This is a fiancial practice question that was given to us. I was wondering if someone could show me how to completely solve this question? for the sake of my understanding is it possible to show...
-
Information for Paige Corporation is given in E8-5. Instructions Using the information given in E8-5, answer the following. (a) Compute the total cost per unit. (b) Compute the desired ROI per unit....
-
Information for Stahl Corporation is given in E8-5. Instructions Using the information given in E8-5, answer the following. (a) Compute the total cost per unit. (b) Compute the desired ROI per unit....
-
A taxpayer has qualified business income of $50,000 from partnership A and a qualified business loss of $30,000 from partnership B. Wages allocable to the taxpayers interest in partnership A were...
-
Describe the following types of computer software and their importance to processing and controls: Operating systems software Communications software Application program software Access control...
-
You are doing exercises on a Nautilus machine in a gym to strengthen your deltoid (shoulder) muscles. Your arms are raised vertically and can pivot around the shoulder joint, and you grasp the cable...
-
Which item(s) appears as a reconciling item(s) to the bank balance in a bank reconciliation? a. Outstanding checks b. Deposits in transit C. Both a and b d. None of the above
-
The initial proceeds per bond, the size of the issue, the initial maturity of the bond, and the years remaining to maturity are shown in the following table for a number of bonds. In each case the...
-
Pantheon Capital, S.A. If Pantheon Capital, S.A. is raising funds via a medium-term euronote with the following characteristics, how much in dollars will Pantheon receive for each $1,000 note sold?...
-
Kofi Allon, who is 32 years old and single, is employed as a technical consultant for a large electronics distributor. He lives at 678 Birch Street, LaMesa, CA 91941. Kofi's Social Security number is...
-
Consider a Markov chain with transition matrix a a (0.6 blo C 0 P=d 0 e f 8 b 0.2 0 0 0.3 0 0 0 0 0.1 0 0 0.2 0 c d 0 0 0.2 0 0 0 0 0 0.5 0.5 0.3 0.7 0 0.4 0.3 0 f 0 0 0 0 0 1 0 0 0 0.9 0 0 0.8 0 8 0...
-
Problem 3 : Controllability Gramian (a) Consider the following state equation: -0.5 0 x = - [ 85 9] = + [8]. x U 0 x(0) = [0:1] (i) (2 points) Show that there exists an input u(t) that drives x(0) to...
-
If you have $577 today and you think you can earn an interest rate of 6% per year, how many years until you have $982?
-
Name 5 examples of how government has overstepped biblical principles in some form of economic policy. A specific piece of legislation relating to business regulation or taxation. The "party...
-
Little Books Inc. recently reported $220,000 of net income. Its EBIT was $420,000, and its tax rate was 42.00%. What was its interest expense?
-
A Spacecraft is not spinning. If a 2.0 N thruster fires 1.0 m from the spacecraft's centre of mass, perpendicular to the centre of mass, how much torque does it generate, and how will the angular...
-
solve this error? I'll attach the instructions, my code, and the error images here. The language is Java. Instructions: Exception in thread "main" java.lang.NullPointerException: Cannot invoke...
-
In a system with light damping (c < cc), the period of vibration is commonly defined as the time interval d = 2/d corresponding to two successive points where the displacement-time curve touches one...
-
Gooddecade manufactures and sells automobile parts throughout the eastern United States. Among its full-time employees are 220 fourteen-and fifteen-year-olds. These teenagers are employed throughout...
-
Muller, a shareholder of SCM, brought an action against SCM over his unsuccessful negotiations to purchase some of SCMs assets overseas. He then formed a shareholder committee to challenge the...
-
Vons Grocery, a large retail grocery chain in Los Angeles, sought to acquire Shopping Bag Food Stores, a direct competitor. At the time of the proposed merger, Vons sales ranked third in the Los...
-
(a) Use a histogram to graph the empirical distribution of the duration times between American Airline trades. Compare the graph with Figure 2.9. Figure 2.9. (b) Interpret the shape of the...
-
Consider the equity prices of the United States companies Microsoft and Walmart for the period April 1990 to July 2004 ( \(T=172)\). (a) Compute the continuously compounded (log) returns on Microsoft...
-
(a) Compute the monthly excess returns on Exxon, General Electric, Gold, IBM, Microsft and Walmart. Be particularly carefully when computing the correct risk free rate to use. (b) Estimate the CAPM...
Study smarter with the SolutionInn App