Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 1: 9 (page 28)

A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon). (a) If you are driving this car in Europe and want to compare its mileage with that of other European cars, express this mileage in km/L (1L = liter). Use the conversion factors in Appendix E. (b) If this car’s gas tank holds 45 L, how many tanks of gas will you use to drive 1500 km?

Short Answer

Expert verified

(a) The mileage in km/L is 23.3 km/L.

(b) The number of tanks required is 1.43.

Step by step solution

01

Conversion in km/L

Part (a)

The conversion of mpg into km/L is shown below,

55mpg=55milegallon×1.609km1mile×1gallon3.785liters55mpg=23.3km/L

Thus, the mileage is 23.4km/L.

02

The number of tanks required

From the mileage we know that distance is 23.4 km for 1 L.

So, for 45 L the car will travel a distance x.

x=23.3kmL×45Lx=1048.5km

03

The number of tanks required

The number of tanks required will be,

n=1500km1048.5kmn=1.43

Thus, tanks of gas used to cover 1500 km is 1.43 tanks.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

How many times does a typical person blink her eyes in a lifetime?

The driver of a car wishes to pass a truck that is traveling at a constant speed of20.0m/s(about41mil/h). Initially, the car is also traveling at20.0m/s, and its front bumper is24.0mbehind the truck’s rear bumper. The car accelerates at a constant 0.600m/s2, then pulls back into the truck’s lane when the rear of the car is26.0mahead of the front of the truck. The car islong, and the truck is 21.0m long. (a) How much time is required for the car to pass the truck? (b) What distance does the car travel during this time? (c) What is the final speed of the car?

Hot Jupiters. In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting very close to the star HD 179949 (hence the term “hot Jupiter”). The orbit was just19 the distance of Mercury from our sun, and it takes the planet only3.09days to make one orbit (assumed to be circular). (a) What is the mass of the star? Express your answer in kilograms and as a multiple of our sun’s mass. (b) How fast (in km>s) is this planet moving?

Starting from the front door of a ranch house, you walk 60.0 m due east to a windmill, turn around, and then slowly walk 40.0 m west to a bench, where you sit and watch the sunrise. It takes you 28.0 s to walk from the house to the windmill and then 36.0 s to walk from the windmill to the bench. For the entire trip from the front door to the bench, what are your (a) average velocity and (b) average speed?

A Honda Civic travels in a straight line along a road. The car’s distance x from a stop sign is given as a function of time t by the equationxt=αt2-βt3 where role="math" localid="1655226337795" α=1.50 m/s2androle="math" localid="1655226362269" β=0.0500m/s2 . Calculate the average velocity of the car for each time interval: (a) t = 0 to t = 2.00 s; (b) t = 0 to t = 4.00 s; (c) t = 2.00 s to t = 4.00 s.
See all solutions

Recommended explanations on Physics Textbooks

Thermodynamics

Read Explanation

Kinematics Physics

Read Explanation

Torque and Rotational Motion

Read Explanation

Astrophysics

Read Explanation

Electricity and Magnetism

Read Explanation

Quantum Physics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free