How to find the heavier one by weighing 2 times only?

Slides:

Advertisements

Similar presentations

Weighing Created by Inna Shapiro ©2007 Problem 1 Judy has 3 old coins. She knows that one coin is fake and is heavier than the other two. How can she.

Advertisements

HandoutLecture 6Binary Search Weighing with a Balance A large container is known to hold 24 oz of nails. The hardware store has a balance, but no weights.

Which Product Absorbs the Most Water?. Research ● Rice grains absorb water easily, they need water to be cooked ● Cinnamon absorbs liquid substances and.

Name:Date 1) Sarah Weighs 24kg. Dave weighs 3kg more. How much does he weigh? 2) How grams is my scale showing? 3a) If a Plum weighs 50g, how much will.

Click here to begin. Click on the fulcrum. No. A fulcrum is the point at which a beam balances or pivots. Click here to go back to page 1. Then try.

LIGHT OR HEAVY? By: Cecily Flores. Have you ever tried to carry a cooler full of ice?

How to find the heavier one by weighing 2 times only?

HandoutMay 2007Binary Search A Lecture in CE Freshman Seminar Series: Ten Puzzling Problems in Computer Engineering.

A look into what EVERYTHING is made of!

Topic Map Topic 14 Lesson 1 = Capacity Units

 The purpose of this experiment was to find out if a sunflower could grow in acid water.  The control in this experiment was the tap water.  The variable.

VAVLPVCTYMAUS PSABLADDERZSB EBSANTESHTICL RLDUDSKTTVSRA EDEARCENEAUOD CRFNORSASINTD TPEUUOCPTDATP UNRTMTRBEEXME MIEUSUULSNSNN USNMEMNISAIIT AESXSVPENNISI.

Aim: How can we explain the motion of elevators using Newton’s 2 nd law? Do Now: What is the acceleration of this object? m = 20 kg F = 150 N F = 100 N.

EQUATIONS This presentation accompanies the worksheet: “Simple equations” available at:

QPLNHTURBIOTS CADAIASOINCOS OSTPOSTLGVAGT AJRLFKLEROUEA CLARITYSOLSTB HTEAMVSRUVAHI INTERACTPELEL NAPKSOCIALIRI GSOCIOGRAMTST CONFORMITYYTY 14 WORDS ANSWERS.

How many olives do we need to match the weight of the apple?

Antonia Ferguson November 10, 2009

Lesson 2. Use It or Lose It How can you improve your brain power?

Algebra Solving Linear Equations 3 x = 6 x = 2 Change side,change sign.

Whiteboardmaths.com © 2007 All rights reserved

Why does Zinc vary in weight when mixed with other elements? By: Erika Dunkle.

Mobiles 4 Algebra. 1.Which is heavier? a) The elephant or the monkey? b) The cylinder or the cube? c) The pineapple or the sheep? 2. In the mobile, the.

MA/CSSE 473 Day 20 Questions before exam More decrease and Conquer.

Heavy or light? Which is heavier? Feather Pencil.

Puzzle of Week 1 You have 2 identical straight pieces of rope. Each takes 1 hour to burn if you light it from 1 side (it doesn’t matter which one). Show.

Balance with Jack and the Beanstalk. Read Story On the iPad… -Tap Other Education Apps Folder -Tap Jack -Tap Read to Me.

 The purpose of this experiment was to find out what wood grow bared. The control in this experiment was to be safe and compare.  The variable in this.

Customary Measure – Mass/Weight The following are customary units for measuring Mass/weight 1 pound (lb)= 16 ounces (oz) 1 ton (T)= 2,000 pounds.

Numeracy Tutor Times 1)Brain Gym 2)Logic Riddles – choice of 3 arranged in increasing difficulty.

7.3 Newton’s third law of motion Action and reaction The wall exerts an equal but opposite force on your hand. uThe pair of forces is called the action-reaction.

Red blocks weigh 10 grams Green blocks weigh 13 grams Mary has x red blocks. In terms of x how much do Mary’s red blocks weigh? Click on the scales.

Logic Development Problems. Puzzle #1 You have a measurement scale where on both sides you can put some balls for weighing. You have a set of eight balls,

Measurement and Geometry 36 1 g 1 kg kilogram hectogram decagram gram ÷ 10 ÷ 10 ÷ 10 x 10 x 10 x 10.

Measuring Mass and Weight

12 FURTHER MATHEMATICS The coefficient of determination.

How can the metric system be used to measure mass? Do Now: How do you know how much you weigh?

Mass vs. Weight. Mass and Weight are RELATED but are NOT the SAME properties.

A geologist has 10 rocks of equal weight

A geologist has 10 rocks of equal weight

20 Questions and 12 Coins How to select 'good questions'?

Balance with Jack and the Beanstalk

Force and Motion Motion, force, and mass.

Sunflowers and Acid Rain

Load Balancing: List Scheduling

The Mighty Scale And how to use it!.

Indices – Learning Outcomes

3.1 Force, Mass and Acceleration

Define inertia. Distinguish between force and net force. Inertia.

On a Distance time graph, what does the slope tell you?

Mass Mass refers to the amount of matter in an object.

Puzzle A Puzzle B.

5th Grade Talent Development Logic

Whiteboardmaths.com © 2007 All rights reserved

SC.8.P.8.2 Differentiate between weight and mass recognizing that weight is the amount of gravitational pull on an object and is distinct from, though.

SC.8.P.8.2 Differentiate between weight and mass recognizing that weight is the amount of gravitational pull on an object and is distinct from, though.

Balance Scale Addition

The Mighty Scale And how to use it!.

Free Fall Motion.

Year 2 Spring Term Week 5 Lesson 1

75 previous answer What is of 37.5? ? go to.

Chapter 19 Terms Review Start slide show.

T. Trimpe Lesson 1: Length T. Trimpe

What is the net force on the object? Will this object move?

Load Balancing: List Scheduling

Factors affecting Visual Weight

On your whiteboards… How much would it cost to send a large letter first class that weighs 200g?

75 previous answer What is of 60? ? go to.

Balanced scales and equations

Presentation transcript:

How to find the heavier one by weighing 2 times only? Which Ball is Heavier? balance scale 9 balls look identically the same but 1 is heavier than the rest How to find the heavier one by weighing 2 times only?

Weigh once if there are only 3 balls? Hint balance scale Weigh once if there are only 3 balls?

3 Balls balance scale 3 Cases: A heavier than B B heavier than A same weight C is heavier

9 Balls balance scale 3 a group A B C 3 Cases: Group A heavier than group B Repeat previous step with group A Group B heavier than group A Repeat with group B same weight Repeat with group C 3 a group

Generalisation balance scale 27 balls More balls? 27 balls? 81 balls? In general?