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A common speed limit in Vancouver, British Columbia, is 70 km/hr. If you are going 45 MPH, are you speeding? Show by converting 45 MPH to km/hr using the conversion factors.

A common speed limit in Vancouver, British Columbia, is 70 km/hr. If you are going 45 MPH, are you speeding? Show by converting 45 MPH to km/hr using the conversion factors.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Hi, can you complete the 12 answers? These are notes and stuck on this  

E1. Suppose that a pancake recipe designed to feed five people calls for 310 grams of flour. How many grams of flour would you use if you wanted to reduce the recipe to only feed two people? {A: E2. Suppose that a cupcake recipe designed to produce 16 cupcakes calls for 240 grams of flour. How many grams of flour would you use if you wanted to make 20 cupcakes? E3. It is estimated that eight medium pizzas are about right to serve a physics club meeting of 32 students. How many pizzas would be required if the group, due to a conflicting math club meeting, was only going to have 20 students in attendance? A: E4. A child uses her hand to measure the width of a tabletop. If her hand has a width of 8 cm at its widest point, and she finds the tabletop to be 16.5 hands wide, what is the width of the tabletop in cm? In meters? Ε11. Area is found by multiplying the length of a surface times the width. If a floor measures 5.28 m², how many square centimeters does this represent? How many square centimeters are there in 1 m²?_ {A: E12. A common speed limit in Vancouver, British Columbia, is 70 km/hr. If you are going 45 MPH, are you speeding? Show by converting 45 MPH to km/hr using the conversion factors. E13. If gas costs $1.27 a liter, how much does a gallon of gas cost? Show by converting gallons to liters using the conversion factors in Appendix E. {A E14. The volume of a cube is found by multiplying length times width times height. If an object has a volume of 1.44 m³, what is the volume in cubic centimeters? Remember to multiply each side by the conversion factor. SP2. In the United States a common quantity of hard liquor was historically a fifth, which represents a fifth of a U.S. gallon. However, because the U.S. wants to market its alcohol globally, and everyone else uses the metric system, it has retooled its packaging, so a common quantity is now 750 mL. a. How many liters are in a fifth? b. How many milliliters are in a fifth? c. Which is larger, 750 mL or a fifth of a gallon? Q1. The main reason that physics is perceived to be difficult is because people think that: A. all its concepts seem incompatible with our everyday experience. B. it frequently changes its explanations of common occurrences. C. math is required to understand its ideas. D. the conservation laws are often shown to be wrong. Q2. In which of these relations will S double if T is doubled ? A. S = 10T B. T = 1/S C. T = S*S D. S = 1/T Q3. The development of physics concepts depends heavily on measurements because A. engineers make all the measurements that are really necessary for physics to survive. B. new theories are impossible without measurements. C. our society depends on the employment of people who make measurements. D. without measurements, incorrect ideas and concepts may seem reasonable.
Transcribed Image Text:E1. Suppose that a pancake recipe designed to feed five people calls for 310 grams of flour. How many grams of flour would you use if you wanted to reduce the recipe to only feed two people? {A: E2. Suppose that a cupcake recipe designed to produce 16 cupcakes calls for 240 grams of flour. How many grams of flour would you use if you wanted to make 20 cupcakes? E3. It is estimated that eight medium pizzas are about right to serve a physics club meeting of 32 students. How many pizzas would be required if the group, due to a conflicting math club meeting, was only going to have 20 students in attendance? A: E4. A child uses her hand to measure the width of a tabletop. If her hand has a width of 8 cm at its widest point, and she finds the tabletop to be 16.5 hands wide, what is the width of the tabletop in cm? In meters? Ε11. Area is found by multiplying the length of a surface times the width. If a floor measures 5.28 m², how many square centimeters does this represent? How many square centimeters are there in 1 m²?_ {A: E12. A common speed limit in Vancouver, British Columbia, is 70 km/hr. If you are going 45 MPH, are you speeding? Show by converting 45 MPH to km/hr using the conversion factors. E13. If gas costs $1.27 a liter, how much does a gallon of gas cost? Show by converting gallons to liters using the conversion factors in Appendix E. {A E14. The volume of a cube is found by multiplying length times width times height. If an object has a volume of 1.44 m³, what is the volume in cubic centimeters? Remember to multiply each side by the conversion factor. SP2. In the United States a common quantity of hard liquor was historically a fifth, which represents a fifth of a U.S. gallon. However, because the U.S. wants to market its alcohol globally, and everyone else uses the metric system, it has retooled its packaging, so a common quantity is now 750 mL. a. How many liters are in a fifth? b. How many milliliters are in a fifth? c. Which is larger, 750 mL or a fifth of a gallon? Q1. The main reason that physics is perceived to be difficult is because people think that: A. all its concepts seem incompatible with our everyday experience. B. it frequently changes its explanations of common occurrences. C. math is required to understand its ideas. D. the conservation laws are often shown to be wrong. Q2. In which of these relations will S double if T is doubled ? A. S = 10T B. T = 1/S C. T = S*S D. S = 1/T Q3. The development of physics concepts depends heavily on measurements because A. engineers make all the measurements that are really necessary for physics to survive. B. new theories are impossible without measurements. C. our society depends on the employment of people who make measurements. D. without measurements, incorrect ideas and concepts may seem reasonable.
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