Using Conversion Factors perimental science in which a is used Scientists throug

Question

Using Conversion Factors perimental science in which a is used Scientists throughout the world use the Intemational of Unas (systeme or S) which is based on the menil system in the United Stales is often necessary to tomer between the Engish system and the sl system on m withew Sl ystem inconveniently large small Therefore it is often necessary the sl Fer this Sl units are modified through the use larger or mailer quantises Part A In Europe, gasoline effeierey is in km/L iryour cars gas mleage 260 ui/eal how many utes gasoline would you need to buy to complete a 142 km trip in Europe? Use the folowingconversions 1km 00214 mi and1gal"37SL Express your answer numerically in liners. tarts Mr Answers Give Up Review Part Submit Part B gas mileage it 420 mi/gal Assume that I euro Express your answer ically in dollars

Explanation / Answer

Solved first four problems post multiple question to get remaining answers

Q1)

a) 26 mi/gallon * 1 km/0.6214mi * 1 gallon/3.78L = 11.069 Km/L

Liters of gasoline required for 142 Km trip = 142/11.069 = 12.828 L

b) Distance travelled in 1 week = 125 * 7 = 875 Km

Coverting it into miles = 875 * 0.6214 mi = 543.725 miles

petrol required in gallons = 543.725/42 = 12.9458 gallons

Petrol required in liters = 12.9458 * 3.78 = 48.935124 Liters

Hence the cost in dollars = 48.935124 * 1.10 * 1.20 = $64.594

PART C

Speed in m/s = 200/21.3 = 9.389 m/sec

Speed in Km/hour = 9.389 m/sec * 1 km/1000 * 3600sec/hour = 33.802 Km/hour

Next Problem

The correct answer is Option C

Since the scientific notation is in the form a * b^(10)

25.6623 * 10^5 = 2.566 * 10^6

Hence correct answer is C

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