/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} 24DQ Why is it incorrect to say that ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: 24DQ (page 123)

Why is it incorrect to say that 1.0 kg equals 2.2 lb?

Short Answer

Expert verified

Kg is the unit of mass (SI unit system), whereas lb is the unit of force/weight (British unit system).

Step by step solution

01

Mass and Weight

In everyday life, mass and weight are interchangeably used, which is incorrect. Mass is a measure of how much inertia the object has. An object having a larger mass will have larger inertial, i.e., larger resistance to change in its motion.

Whereas on the other hand, weight is the gravitational force on the object by the earth. Mass is always constant, but the weight will depend on the value of acceleration due to gravity which differs from one planet to planet.

02

Kilogram kg and pound lb

Kg is the unit of mass (SI unit system), whereas lb is the unit of force/weight (British unit system).

Hence the statement 1.0 kg equals 2.2 lb is incorrect.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

Given two vectors A鈫�=4.00i^+7.00j^ and B鈫�=5.00i^鈭�7.00j^, (a) find the magnitude of each vector; (b) use unit vectors to write an expression for the vector difference A鈫�鈭�B鈫�; and (c) find the magnitude and direction of the vector difference A鈫�鈭�B鈫�. (d) In a vector diagram showA鈫�,B鈫� and A鈫�鈭�B鈫�, and show that your diagram agrees qualitatively with your answer to part (c).

Question: A car鈥檚 velocity as a function of time is given byvxt=伪+尾t2, where伪=3.00m/sand 尾=0.100m/s3.(a) Calculate the average acceleration for the time interval t=0tot=5.00s. (b) Calculate the instantaneous acceleration forrole="math" t=0tot=5.00s.

(c) Draw vx-tandax-tgraphs for the car鈥檚 motion betweent=0tot=5.00s.

A physics professor leaves her house and walks along the sidewalk toward campus. After 5 min, it starts to rain, and she returns home. Her distance from her house as a function of time is shown in Fig. E2.10 At which of the labeled points is her velocity (a) zero? (b) constant and positive? (c) constant and negative? (d) increasing in magnitude? (e) decreasing in magnitude?

A car and a truck start from rest at the same instant, with the car initially at some distance behind the truck. The truck has a constant acceleration of20m/s2, and the car has an acceleration of3.40m/s2. The car overtakes the truck after the truck has moved60.0m. (a) How much time does it take the car to overtake the truck? (b) How far was the car behind the truck initially? (c) What is the speed of each when they are abreast? (d) On a single graph, sketch the position of each vehicle as a function of time. Takex=0at the initial location of the truck.

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

Recommended explanations on Physics Textbooks

Nuclear Physics

Read Explanation

Fundamentals of Physics

Read Explanation

Radiation

Read Explanation

Kinematics Physics

Read Explanation

Particle Model of Matter

Read Explanation

Engineering 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.