Concave and Convex Mirrors -They are also known as spherical mirrors and are formed when a spherical glass is silvered.-If the inside is silvered a convex or diverging is formed while a concave or converging mirror is formed when the outside is silvered. Parts of a Spherical Mirror
Centre of Gravity – Centre of gravity or C.G is the point of balance of a body in which the total weight of the body seems to act. Practice Example 1 The figure below shows a uniform bar of weight
Turning Effects: Introduction – The turning effect of a body is called the moment of that force.– The turning effect produced depends on both the size of the force and the distance from the pivot.– The moment of a force
Measuring Length Using Vernier Callipers -Vernier callipers is used when higher accuracy in measurement is required and this cannot be done using a metre rule.– Vernier callipers has two scales; main scale and vernier scale. Outside jaws are used to measure both
Magnetism: Introduction – Magnets are substances that are able to attract and hold items. Magnets and Non-Magnetic Materials – Magnetic materials are those that are strongly attracted by magnets while non-magnetic ones are those that are not affected by magnets.–
Introduction to Pressure – It is defined as the force acting normally (perpendicularly) per unit area– The SI units for pressure is newton per metre squared (N/m² or Nm-2). – One Nm-2 is known as one Pascal (Pa). Formula for Pressure – pressure is
Measurement comprises of length, area, volume, mass, density and time. Universal System of Units is called system international d’ unites (International System of Units) – SI Units.Below are the major SI Units Basic Quantity SI Unit Symbol Length Metre m Mass Kilogram
Physics is a Greek word meaning nature hence it deals with natural phenomena. What is Physics? – Physics is therefore a science whose objective is the study of components of matter and their mutual interactions.– Physics is also defined as the
– At a school laboratory:– An acid may be defined as a substance that turn litmus red.– A base may be defined as a substance that turn litmus blue.– Litmus is a lichen found mainly in West Africa.– It changes its colour
Introduction to Oxides of Nitrogen Nitrogen has a position in second period of group V in the modern periodic table. It has molecular formula N2. It has atomic number 7 and atomic weight 14.08 and its electronic configuration of 2,5.
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Are the abilities that allow you to write effectively and concisely. A competent...
Reading is the process of going through written information or piece of wor...
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Listening is ability to accurately receive and interpret messages in the communi...
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Genetics is the study of heredity and variationHeredity- is the passage of chara...