Everything Science Grade 12

CHAPTER 6. MOTIONIN TWO DIMENSIONS 6.5 A stone is thrown vertically upwards and it returns to the ground. If friction is ignore ...

6.5 CHAPTER 6. MOTIONIN TWO DIMENSIONS The pilot flies at the same altitude at a constant speed of 130 km.h−^1 relative to the a ...

CHAPTER 6. MOTIONIN TWO DIMENSIONS 6.5 30 ◦ A Q P 100 m River current N E S � � � During the swim, Andrew maintains a constantve ...

6.5 CHAPTER 6. MOTIONIN TWO DIMENSIONS time (s) velocity (m·s−^1 ) 10 5 0 -5 -10 -15 1,0 2,0 (a) At what velocity does the boy t ...

CHAPTER 6. MOTIONIN TWO DIMENSIONS 6.5 (b) What is the magnitude of her velocity during her descent with the parachute fully ope ...

6.5 CHAPTER 6. MOTIONIN TWO DIMENSIONS (b) Calculate their average velocity, in km·hr−^1 , in which the aero- plane should be tr ...

CHAPTER 6. MOTIONIN TWO DIMENSIONS 6.5 3 m· s−^1 Trolley + Lesedi (a) (b) (c) More practice video solutions or help at http://ww ...

Mechanical Properties of Matter 7 7.1 Introduction ESCDK In this chapter we willlook at some mechanical (physical) propertiesof ...

CHAPTER 7. MECHANICAL PROPERTIES OF MATTER 7.2 DEFINITION: Hooke’s Law In an elastic spring, the extension varies linearly with ...

7.2 CHAPTER 7. MECHANICAL PROPERTIES OF MATTER Conclusions: What do you observe about the relationshipbetween the applied force ...

CHAPTER 7. MECHANICAL PROPERTIES OF MATTER 7.2 SOLUTION Step 1 : Determine what information you have: We know: F = 0,6 N The equ ...

7.2 CHAPTER 7. MECHANICAL PROPERTIES OF MATTER Example 3: Hooke’s Law III QUESTION A spring has a spring constant of− 400 N.m−^1 ...

CHAPTER 7. MECHANICAL PROPERTIES OF MATTER 7.2 Brittle material Force extension fracture Figure 7.2: A hard, brittle substance T ...

7.2 CHAPTER 7. MECHANICAL PROPERTIES OF MATTER Ductile material extension Force fracture plastic region elastic region Figure 7. ...

CHAPTER 7. MECHANICAL PROPERTIES OF MATTER 7.3 Exercise 7 - 1 What causes deformation? Describe Hooke’s Law in words and mathem ...

7.3 CHAPTER 7. MECHANICAL PROPERTIES OF MATTER of plastic (polymer) theyonly behave like plastic. Think of them as being like pl ...

CHAPTER 7. MECHANICAL PROPERTIES OF MATTER 7.4 7.4 Failure and strength of materials ESCDR The properties of matter ESCDS The st ...

7.4 CHAPTER 7. MECHANICAL PROPERTIES OF MATTER it can break the weakened bonds, allowing thetwo sides of the crystalto slide aga ...

CHAPTER 7. MECHANICAL PROPERTIES OF MATTER 7.4 Introduction of Impurities ESCDX Most pure metals are relatively weak because dis ...

7.4 CHAPTER 7. MECHANICAL PROPERTIES OF MATTER Exercise 7 - 3 List the similarities and differences between the brittle and duc ...