3. Radar guns measure the rate of distance change between the gun and the object it is measuring. For instance, areading of "55 mph" means the object is moving away from the gun at a rate of 55 miles per hour, whereas ameasurement of "-25 mph" would mean that the object is approaching the gun at a rate of 25 miles per hour.If the radar gun is moving (say, attached to a police car) then radar readouts are only immediately understandable ifthe gun and the object are moving along the same line. If a police officer is traveling 60 mph and gets a readout of15 mph, he knows that the car ahead of him is moving away at a rate of 15 miles an hour, meaning the car is traveling75 mph. (This straight-line principle is one reason officers park on the side of the highway and try to shoot straightback down the road. It gives the most accurate reading.)Suppose an officer is driving due north at 30 mph and sees a car moving due east, as shown in the picture below. Usinghis radar gun, he measures a reading of 20 mph. By using landmarks, he believes both he and the other car are about1/2 mile from the intersection of their two roads. If the speed limit on the other road is 50 mph, is the other driverspeeding?

Answered: Image /qna-images/answer/fa3c9cdb-6fcd-4bf3-8ed1-af6d4cd0a8f5.jpg

Answered: 3. Radar guns measure the rate of…

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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Question 12
Please answer all parts in detail.
When a forensic expert determines time of death, they often have additional information besides body temperature. Suppose a coroner finds that the person who was murdered had an infection that probably raised the core body temperature to around 102 degrees. Using the same cooling constant, ambient room temperature, and temperature data as in problem 1, make a new estimate for the time of death. Again, write your answer as a time, not just as ? minutes. A(Ambient temp)=68 B(temp)=85.9 K(cooling constant)=0.183702
The cost of fuel is the largest component of cost of ownership for most vehicles. Fuel cost is (almost) inversely proportional to gas mileage; higher gas mileage means lower fuel cost and vice-versa. If you keep track of the number of miles driven on each tank of gas as well as how much gas is purchased, it is easy to calculate gas mileage; many cell phone apps exist to track this. The data in the following table is the gas mileage for Mr. Hebert's 2015 Jeep Wrangler Unlimited. 12.85 14.98 15.36 17.09 18.86 13.28 15.11 15.62 17.50 19.07 13.48 15.12 15.65 17.66 20.91 14.65 15.13 16.41 18.17 21.17 14.71 15.14 16.80 18.27 22.11 f. Construct a 95% confidence interval to estimate the average fuel economy of the jeep. enter your response here≤μ≤enter your response here (Round your answers to 2 decimal places.)
FRQ #2: Directions: Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations. Windmills generate electricity by transferring energy from wind to a turbine. A study was conducted to examine the relationship between wind velocity in miles per hour (mph) and electricity production in amperes for one particular windmill. For the windmill, measurements were taken on twenty-five randomly selected days, and the computer output for the regression analysis for predicting electricity production based on wind velocity is given below. The regression model assumptions were checked and determined to be reasonable over the interval of wind speeds represented in the data, which were from 10 miles per hour to 40 miles per hour. a) Use the computer output above to determine the equation of the least squares regression line. Identify all variables used in the…
This value represents how much a change in one variable can be predicted from its relationship witha completely different variable .......
Assume that an r of .80 describes the relationship between daily food intake, mea-sured in ounces, and body weight, measured in pounds, for a group of adults. Would a shift in the units of measurement from ounces to grams and from pounds to kilograms change the value of r ? Justify your answer
The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in F) for that month. The past year's usage and temperatures are in the following table: Usage/ Month Temp. 1000 Month 21 185.79 July. 24 214.47 Aug. 32 288.03 Sept. 47 424.84 Oct. 50 454.58 Nov. 59 539.03 Dec. Jan. Feb. Mar. Apr. May June Temp. 68 74 62 50 41 30 Identify which are the independent and dependent variables. Usage/ 1000 621.55 675.06 562.03 452.93 369.95 273.98
Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain". The acidity of liquids is measured by pH on a scale of 00 to 14.14. Distilled water has pH 7.0,7.0, and lower pH values indicate acidity. Normal rain is somewhat acidic, so acid rain is sometimes defined as rainfall with a pH below 5.0.5.0. The pH of rain at one location varies among rainy days according to a Normal distribution with mean 5.435.43 and standard deviation 0.54.deviation 0.54. What proportion of rainy days have rainfall with pH below 5.0?5.0?
#gn. Don't provide handwriting solution
The cost of fuel is the largest component of cost of ownership for most vehicles. Fuel cost is (almost) inversely proportional to gas mileage; higher gas mileage means lower fuel cost and vice-versa. If you keep track of the number of miles driven on each tank of gas as well as how much gas is purchased, it is easy to calculate gas mileage; many cell phone apps exist to track this. The data in the following table is the gas mileage for Mr. Hebert's 2015 Jeep Wrangler Unlimited. 12.85 14.98 15.36 17.09 18.86 13.28 15.11 15.62 17.50 19.07 13.48 15.12 15.65 17.66 20.91 14.65 15.13 16.41 18.17 21.17 14.71 15.14 16.80 18.27 22.11 a. Find the average fuel economy. x =enter your response here (Round your answer to 3 decimal places.)
Identify the relationship between two variables and the terminology used to describe that relationship if a. ρ >0. b. ρ = 0. c.ρ< 0.

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