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  • #793

    admin
    Member

    A Level/JC Tuition Singapore/Physics Tuition/H2 Physics Tuition/JC Physics Tuition/Physics Tutor

    Please post your A-level Physics/JC Physics questions here

    Thank you

    • This topic was modified 6 years, 1 month ago by  admin.
    • This topic was modified 6 years, 1 month ago by  admin.
    • This topic was modified 6 years, 1 month ago by  admin.
    • This topic was modified 6 years ago by  admin.
    • This topic was modified 5 years ago by  admin.
    #963

    admin
    Member

    Hi JC Physics/A-Level Physics students,

    We intend to complete the A-level Physics syllabus by end May and in the month of June we will practise 2011 prelim questions from top 5 JCs.

    Wishing you and your family a Blessed and Joyful Chinese New Year

    • This reply was modified 6 years, 1 month ago by  admin.
    • This reply was modified 6 years, 1 month ago by  admin.
    #968

    admin
    Member

    Hi Physics A-Level students

    Attached is the definitions list for Alernating Currents

    Alternating Currents

    Characteristics of alternating currents

    1 Peak value current of an alternating current is defined as the maximum possible value of the alternating current.

    2 Root-mean-square current of an alternating current flowing in a resistor has the same value as that of a steady current flowing in the same resistor such as to produce the same average heating rate in the resistor.

    Rectification with a diode

    3 Rectification is a process of converting an alternating current to a direct current (flowing in one direction).

    4 A diode is an electrical device with two terminals that allows current to flow through it in one direction only.

    • This reply was modified 6 years, 1 month ago by  admin.
    • This reply was modified 6 years, 1 month ago by  admin.
    #971

    admin
    Member

    Hi Physics Tuition Students

    Attached definition list on EM and EMI

    Electromagnetism

    Force on current-carrying conductor

    1 A magnetic field is a region of space where a force acts on an electric current in a wire or a permanent magnet.

    2 Magnetic flux density at a region is the force experienced by a conductor of unit length carrying a unit current, placed perpendicular to the magnetic field.

    3 The tesla is the magnetic flux density of a magnetic field when one newton of force is experienced by a conductor of length one metre, carrying one ampere of current, placed perpendicular to the magnetic field.

    Electromagnetic Induction

    Magnetic flux

    1 Magnetic flux through an area is the product of the area and the component of the magnetic flux density normal to the area.

    2 The weber is the magnetic flux through an area of one metre squared when one tesla of magnetic flux density is directed normal to that area.

    3 Magnetic flux linkage through a coil is the product of the magnetic flux through the coil and the number of turns of the coil.

    Laws of electromagnetic induction

    4 Faraday’s law states that magnitude of the induced e.m.f. in a coil is directly proportional to the rate of change of magnetic flux linkage through the coil.

    5 Lenz’s law states that the direction of the induced current will always flow in such a manner such as to produce an effect to oppose the change in magnetic flux linkage.

    OR
    the direction of the induced e.m.f. opposes the change producing it

    • This reply was modified 6 years, 1 month ago by  admin.
    #973

    admin
    Member

    Hi Phyiscs Tuition A Level Students

    Attached definitions on thermal physics

    THERMAL PHYSICS

    Internal energy

    1 Internal energy of a system is the sum of the random kinetic and potential energies of the molecules of the system.

    Temperature scales

    2 Two regions in thermal equilibrium exchanges thermal energy at the same rate and are at the same temperature.

    3 A thermometric property is a physical quantity that varies with temperature.

    4 Thermodynamic temperature scale (absolute temperature scale) does not depend on any thermometric property, but is based on the properties of an ideal gas.

    5 Absolute zero is the temperature at which all substances have a minimum internal energy.

    6 The triple point of water is the temperature at which the saturated water vapour, pure water and ice all coexist in thermal equilibrium. (Ttr = 273.16 K)

    Specific heat capacity

    7 The specific heat capacity of a substance is defined as the heat required to cause a unit rise in temperature of a unit mass of the substance.

    Specific latent heat

    8 The specific latent heat of a substance is defined as the heat released or absorbed when unit mass of the substance undergoes a change of state at constant temperature.

    First law of thermodynamics

    9 First law of thermodynamics states that the increase in internal energy of a system is the sum of the work done on the system and the heat supplied to the system.

    The ideal gas equation

    10 Molecules of an ideal gas have no inter-molecular attraction.

    11 The Avogadro constant is the number of atoms in 0.012 kg of carbon-12.

    12 One mole of any substance is the amount containing a number of particles equal to the Avogadro constant.

    #974

    admin
    Member

    A-Level Physics Tuition Singapore / A-Level Physics Tutors Singapore

    Questions and solutions for explanation–based questions according to H2 Physics oscillations learning outcomes

    Oscillations

    1)How resonance can be avoided? Why it needs to be avoided?

    Resonance can be avoided by adjusting the forced oscillating frequency to be far from the natural frequency of the oscillating system.
    Resonance will produce maximum amplitude of oscillation, hence may cause disintegration of the oscillating system.

    2)Describe the importance of critical damping in cases such as a car suspension system.

    Suspension system of a car is designed so that it experiences critical damping.Critical damping will ensure that the car will return to its equilibrium position quickly after it passes over a hump and do not oscillate up and down about its equilibrium position.

    • This reply was modified 6 years, 1 month ago by  admin.
    #1111

    Shaun Tan Wei Wen
    Participant

    Request concise notes for superposition

    #1112

    admin
    Member

    A-Level H1 JC2 Physics Tuition Singapore/JC2 H1 Physics Tuition

    Hi all JC2 H1 Physics Tuition Singapore/A-Level H1 Physics students

    Please be inform that JC2 H1 Physics lesson will commence on 17 Feb Friday from 7pm to 9pm

    Thank you for your support

    From A-level Physics Tutor

    #1148

    admin
    Member

    A-Level Physics Tuition Singapore / A-Level Physics Tutors Singapore

    Hi All H2 Physics Students

    Please take note that Quantum Physics Concise Notes is ready for collection.

    Thanks

    From A-Level Physics Tutor Singapore

    #1184

    Why V=IR cannot be used to explain the reason for transmitting electrical energy through cables at high voltages?

    #1270

    Gil Ki Hyun
    Participant

    Can i request for SAJC 2011 revision package3
    solutions for topic

    7-gravitational field qn 12
    8-oscillations qn13
    9-thermal physics qn14
    10-super position qn 15,16
    13,14-current and dc circuit qn18 19 20
    thank you

    #1298

    admin
    Member

    A-Level Physics Tuition Singapore/H2 Physics Tuition/JC Physics Tutor

    Hi Ki Hyun

    Will print hard copy for u and the group.

    From A-Level Physics Tuition Tutor Singapore

    #1454

    admin
    Member

    A-Level Physics Tuition Singapore/H2 Physics Tuition/JC Physics Tutor

    Hi A-level/H2/JC Physics

    Hope u enjoy my Quantum Physics lesson and the mind mapping techiques and practices will help u in the coming Mid Year Exam

    Cheers!
    From A-Level Physics Tuition Tutor Singapore

    #1455

    admin
    Member

    A-Level Physics Tuition Singapore/H2 Physics Tuition/JC Physics Tutor

    Hi A-level/H2/JC Physics

    Hope u enjoy my Quantum Physics lesson and the mind mapping techiques and practices will help u in the coming Mid Year Exam

    Cheers!
    From A-Level Physics Tuition Tutor Singapore

    #1531

    admin
    Member

    A-Level Physics Tuition Singapore/H2 Physics Tuition/JC Physics Tutor

    Hi A-level/H2/JC Physics Tuition students

    We have completed Nuclear Physics Part I and Part II

    Please take note the following misconceptions

    1) Binding energy is NOT the energy binding the nucleons together. Binding energy is the work done (or energy supplied into the atom) to break the nucleus into its constituent nucleons.

    2) The binding energy per nucleon binding energy per nucleon is an indication of a nucleus’ stability, NOT binding energy.

    Next lesson will be on Nuclear Physics 3 on radioactivity decay and will be starting revision by using top 5 JCs Prelim Qns
    Cheers

    Mr Ong SH – A Level/JC/H2 Physics Tutor

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