Posted in A-Level, H2 Math, Holiday Classes, Intensive Revision, JC Math (H2/H1)

SEP HOLS H2 MATH REVISION/RELEARNING BY TOPICS

 

 

The exams are close.

Our experienced tutor is prepared to go through specific topics of H2 Math to aid in your exam preparation.

Book the slots according to what you need.
No need to sit in through topics that you are confident in.

Days: 3rd Sep – 7th Sep (Mon – Fri)
Times: 10am – 12 pm & 1pm – 3pm
Location: Blk 644, Bukit Batok Central, #01-68. S(650644).

Target Group: Current JC students who cannot seem to reach their intended grades despite great effort.

To sign up, sms <Student name>, <J2H2Sep>,<Date>,<Time> to 9786 0411

Our worksheets are selected based on past year questions from a variety of JCs, and common past year questions from the A-levels.

Posted in A-Level, Crash Course, Group Tuition, H2 Biology, Intensive Revision, JC Biology, Junior College

A LEVEL H2 BIOLOGY INTENSIVE RELEARNING & REVISION JUNE 2018

Learning outcomes:

1) To lay/fine-tune the foundations of the subject so that the student is able to feel comfortable and confident when tackling exam papers.

2) To strengthen students understanding of the fundamentals.

3) To develop students’ interest in studying Biology for ‘A’ levels or beyond.

Topics to be covered:

(A) The Cell and Biomolecules of Life :

  • What is a cell?
  • From cell theory to the organelles and the membrane: structure and function
  • Bacterial cell: features of prokaryotic cell
  • Biomolecules: types and structures; roles in living organisms as building blocks and intracellular trafficking
  • What is enzymatic reaction? The catalyst and the regulating factors
  • What is Stem cell? Its features, application and ethical implication

(B) Genetics and Inheritance:

  • Central dogma of biology
  • Nucleic acid: Structure and function
  • From DNA replication to Cell cycle
  • What could possibly go wrong? Genetic mutation and its implication
  • Molecular biology of Cancer
  • Mendelian Genetics
  • Dihybrid crosses
  • Genetics of bacteria and viruses

(C) Energy and Equilibrium:

  • Energy trapping versus energy releasing process: photosynthesis and respiration
  • Differences between oxygen-dependent and oxygen-independent respiration
  • An overview of cell signaling and communication

(D) Biological Evolution:

  • The concept of the species: Natural classification and phylogeny
  • The neo-Darwinian revolution
  • Genetic variation
  • Natural selection and evolution
  • The effect of environment on phenotype

(E) Infectious diseases:

  • The immune system
  • Genetic recombination
  • Mode of viral and bacterial infection
  • Vaccination and modes of action of antibiotics

(F) Impact of Climate Change:

  • Human activities that contribute to climate change
  • Effects of climate change
  • Impact on biodiversity, biomedicines and global food supply

Format: Teaching + Worksheets + Discussions

DATE: 19 June (Tue) to 21 June (Thu) 2018

TIME: 11.00 AM – 12.30 PM & 2.00 PM – 3.30 PM

Location: Blk 644, Bukit Batok Central, #01-68. S(650644).

To register, sms <Student Name><H2BIOLOGY> to 98530744 / 97860411.

For any queries, kindly call or SMS to 98530744 / 97860411.

Posted in A-Level, Crash Course, Group Tuition, H1 Math, H2 Math, Holiday Classes, Intensive Revision, JC Math (H2/H1), Relearn

JC 1 / A LEVEL H1 / H2 MATH GRAPHING INTENSIVE RELEARNING & REVISION JUNE 2018

 

Many JC students lack confidence in graphing/sketching questions. They waste
more than 15 minutes sketching a curve and might still get it wrong. Some students do not understand the order of transformation and scaling.

This course will allow you to master graphing techniques and sketching, and effectively score full marks for this segment in your promotional exams or A-levels. There will be a strong focus on transformation and scaling equations, and graphs such as the negative, modulo and reciprocal graph.

By the end of this class, you will learn how to:

-Spot common graphing trends and problems

-Understand the significance of restricting domain and range in graphing

-Effectively utilize your graphic calculator to sketch complex graphs

-Confidently and correctly sketch difficult graphs such as reciprocal, modulo and y-squared graphs in under 10minutes

-Systematically perform transformation of graphs without error

Duration: 3 weeks, 2h each

Dates: Every Wednesday 6 June. 13 June and 20 June

Time: 1030 am – 1230 pm

Location: Blk 644, Bukit Batok Central, #01-68. S(650644).

Format: Teaching + Worksheets + Discussions

Target Group: JC students who will be taking the A level Examination in Mathematics.

Our worksheets are selected based on past year questions from a variety of JCs, and common past year questions from the A-levels. During lessons, we provide tips on trends observed in different schools. Graph paper will be provided.

Note:- Discounted fee for signing up together with another student. Do let us know.

The Tutor:

Mr Pang has been coaching students in Secondary Science and Mathematics for more than 4 years. An alumnus of RVHS who graduated from Electrical Engineering in NUS(B.Eng Hons), he is a caring and effective tutor whose students do very well in tests and exams. Innovative and well spoken, Mr Pang believes in interaction or feedback with students and parents alike in order to achieve their desired results.

Posted in A-Level, H2 Physics, Holiday Classes, Integrated Programme (IP), Intensive Revision, IP Physics, JC Physics

JC1 / YEAR5 IP H2 PHYSICS RELEARN (NOV-DEC 2023)

Next year is A levels. There are a lot of topics to be revised and prepared for to be able to do well in the A levels and attend the university and course of your choice.

If you did not do well this year in Physics, now is the time to relearn the concepts, strengthen your foundations and be prepared for the coming year.

You can attend the lessons as per the topics of your choice. Classes are on weekdays, from 2pm to 5pm. Dates and topics to be covered are listed below.

Do note that the fees is $135 per topic (minimum 2 students) but if it is a 1 to 1, the fees is double.

15 NOV 2017 to 29 NOV 2023 (11 sessions)

Time: 2.00 pm – 5.00 pm

Location:   Blk 644, Bukit Batok Central, #01-68, S(650644).

Focus: CONCEPTUAL UNDERSTANDING & APPLICATION OF SKILLS

Format: Teaching + Worksheets + Discussions

Target Group: Current JC1 / Year5 IP students who wish to relearn their Physics.

About the tutor:

Mr Pang graduated with a B.Eng(Honors) from NUS, and has been coaching students in O-level/IP and A-level Mathematics and Science for more than 5 years. An alumnus of RVHS(IP) and an experienced tutor in IP/A-level education, Mr Pang is a results oriented tutor whose students do very well in exams through efficient learning methods and exam preparation skills. Mr Pang employs a variety of teaching methods to cater to every type of learner, as well as teaching them the skill of self diagnostics, giving them the ability to constantly spot and rectify their own errors. He takes pride in inspiring his students to become confident learners and critical thinkers.

To register, sms <Student Name><JC1PHYRELEARN><BB> to 90065997

_______________________________________

TUITION CLASSES:

jcbutton          secbutton

ipbutton                    pributton

_______________________________________________________________

EDUCATIONAL SERVICES:

hwsupervbutton                   intensivebutton

headststart-1                   private-candidates

______________________________________________________________

By EX-MOE TEACHERS & EXPERIENCED TUTORS

@ BLK 644, BUKIT BATOK CENTRAL, #01-68. S(650644).

CALL 65694897 OR SMS 98530744 OR 97860411.

Posted in A-Level, H2 Physics, Headstart Classes, Holiday Classes, JC Physics

YR5 IP / JC1 (2024) H2 PHYSICS HEAD START (NOV-DEC)

Target Group: Current Y4 IP students or O-level graduates attending JC

Start Date:  SUNDAY 5 NOV 2023

Time: 9.00 am – 10.45 am,  5 Nov to 10 Dec 2017 (6 sessions)

Location:   Blk 644, Bukit Batok Central, #01-68. S(650644).

Topic to be covered:  Kinematics and Dynamics

Focus: CONCEPTUAL UNDERSTANDING & APPLICATION OF SKILLS

Format: Teaching + Worksheets + Discussions

Fee: $420 per student for 6 lessons (min of 2 students to start)

Course Outline:

5/11: Errors & Uncertainties, Scalar v.s Vector

12/11: Kinematics: Equations of Motion

19/11: Kinematics: Free-falling objects

26/11: Kinematics: Projectile motion

3/12: Dynamics: Newton’s 3 laws

10/12: Dynamics: Types of Forces

Background of tutor:

Mr Pang graduated with a B.Eng(Honors) from NUS, and has been coaching students in O-level/IP and A-level Mathematics and Science for more than 5 years. An alumnus of RVHS(IP) and an experienced tutor in IP/A-level education, Mr Pang is a results oriented tutor whose students do very well in exams through efficient learning methods and exam preparation skills. Mr Pang employs a variety of teaching methods to cater to every type of learner, as well as teaching them the skill of self diagnostics, giving them the ability to constantly spot and rectify their own errors. He takes pride in inspiring his students to become confident learners and critical thinkers.

 To register, sms <Student Name><J1H2PHYHS> to 90065997

_______________________________________

TUITION CLASSES:

jcbutton          secbutton

ipbutton                    pributton

_______________________________________________________________

EDUCATIONAL SERVICES:

hwsupervbutton                   intensivebutton

headststart-1                   private-candidates

______________________________________________________________

By EX-MOE TEACHERS & EXPERIENCED TUTORS

@ BLK 644, BUKIT BATOK CENTRAL, #01-68. S(650644).

CALL 65694897 OR SMS 98530744 OR 97860411.

Posted in H2 Math, Headstart Classes

IP YR5 / JC1 (2019) H2 MATH HEAD START PROGRAM

Start Date:  TUESSDAY 5 December 2023

Time: 10.00 am – 12.00 Pm, from 5 Dec to 8 Dec 2023 (4 sessions)

Location:   Blk 644, Bukit Batok Central, #01-68. S(650644).

Topics to be covered:  J1 term 1 Topics

Focus: CONCEPTUAL UNDERSTANDING & APPLICATION OF SKILLS

Format: Teaching + Worksheets + Discussions

Fee: $300 per student for 4 lessons

Course Outline:

5/12: Equations and Inequalities

6/12: Functions Part 1

7/12: Functions Part 2

8/12: Graphing

Background of tutor:

Mr Pang graduated with a B.Eng(Honors) from NUS, and has been coaching students in O-level/IP and A-level Mathematics and Science for more than 5 years. An alumnus of RVHS(IP) and an experienced tutor in IP/A-level education, Mr Pang is a results oriented tutor whose students do very well in exams through efficient learning methods and exam preparation skills. Mr Pang employs a variety of teaching methods to cater to every type of learner, as well as teaching them the skill of self diagnostics, giving them the ability to constantly spot and rectify their own errors. He takes pride in inspiring his students to become confident learners and critical thinkers.

To register, sms <Student Name><J1H2MHS> to 90065997

For any queries, you may also talk directly to the tutor at 90065997.

_______________________________________

TUITION CLASSES:

jcbutton          secbutton

ipbutton                    pributton

_______________________________________________________________

EDUCATIONAL SERVICES:

hwsupervbutton                   intensivebutton

headststart-1                   private-candidates

______________________________________________________________

By EX-MOE TEACHERS & EXPERIENCED TUTORS

@ BLK 644, BUKIT BATOK CENTRAL, #01-68. S(650644).

CALL 65694897 OR SMS 97860411.

Posted in A-Level, General Paper, Junior College

GENERAL PAPER JUNE HOLIDAYS PROGRAMME

General Paper Programme Outline

This is an intensive system designed to equip you with the essential tools needed.

Duration: 3 sessions (3hours each)

Course Levels available:

  1. A) FOUNDATION BUILDING SYSTEM (suitable for students with grades below C)

  2. B) FINE-TUNING SYSTEM (suitable for students with grades C and above. This course will skip fundamental work and zero-in on precision writing techniques)

*note: Course fees are identical for both programmes. Choose the one that best suits your immediate needs and circumstances.

—————————————————————————————————-

Overview of primary Components:

1)    Essay writing techniques- Question choice & analysis, essay structures, formulating arguments, conveying ideas in effective writing- there are essays, and then there are exam-essays.

2)    Comprehension skills- critical reading, question analysis, effective paraphrasing and AQ-mastery. Work-arounds and preparation before we even start reading the text is key!

3)    Content- Cut down on the need to memorize tons of facts and statistics. Solutions to content-generating that will save you hours each day!

 

———————————————————————————————————–

Workshop structure:

Session 1: Essay writing

Dates: (Course A- May 30th/June 13th, Course B: June 6/21st )

From planning to execution. Using time effectively to maximise the quality of your essay: a step-by-step guide on how to tackle any question in Paper 1. Materials include a 101-essential checklist for every student, sample essays/paragraphs, discussion of examination questions to cover a broad range of topics/areas of focus.

 

Session 2: Comprehension

Dates: (Course A: May 31st/June 14th, Course B: June 7th/22nd )

Critical reading and prepping effectively to ensure the most coverage of the passage, as well as systematic addressing of the various question types. Paraphrasing techniques and practices will also be the focus as this skill is of core importance to this paper, and one many students overlook. Finally, deciphering the AQ- how to maximise marks in a time-pressured window. Materials will include a handout covering various question types, sample/excerpts from a wide range of JC examination papers, as well as sample AQs from past year Cambridge papers.

 

Session 3: Content

Dates: (Course A: June 1st/15th, Course B: June 8th/23rd)

General knowledge is key to scoring well. But often times, it is not the volume, but rather the quality, and application. Content-manipulation/generation can often dramatically cut back on hours spent memorising facts and stats for the mere sake of doing so. Students will be shown, through a variety of methodologies (mind-maps, issue-linking, thinking structures etc) how to prepare for the subject efficiently. Realising that topics/modules should never be approached as separate entities also falls in-line with the changing trends of GP questions set by Cambridge, where essay questions are often multi-faceted.

 —————————————————————————————————–

Course take-homes:

LET’S MAKE THINKING FUN AGAIN

Appreciation of GP beyond just a subject, but rather gaining a set of skills that can be applied throughout various aspects of life and academia. Debunking myths such as “the more I know, the better I’ll do”, and finally, re-discovering the passion for learning over the need for studying.

Attendees of the workshop will also gain unlimited access to my web-blog, which houses a repository of articles, sample essays/AQ responses, as well as revision essentials.

—————————————————————————————————–

About the tutor:

Mr Shermann is a graduate from NUS, holding a Bachelor of Arts degree in Sociology and History. He has 9 years of teaching experience in various Junior Colleges implementing his GP programmes, and over a decade of experience in private coaching. He specialises in General Paper and English Language, and has been credited with creating unique and functional approaches to effective writing. A fun and interactive teacher, sessions with Mr Shermann promise to be eye-opening and productive. Let’s get those grades you deserve, and let’s make learning fun again!

—————————————————————————————————–


Administrative matters:

1)    Sessions will be conducted over the June School Holidays.

2)    Sessions will be run once a week, from 2pm to 5pm (or any alternative time provided by Singapore Learner), from Tuesdays to Thursdays

3)    Fees are $150 per session, with a discount applied for every subsequent session. 2 sessions will be charged at $130 each, whilst signing up for all 3 sessions will be charged at $110 each only.

Venue: Blk 644, Bukit Batok Central, #01-68. S(650644)

Our location is just a 3-min walk from either the Bukit Batok MRT station or the Bukit Batok Bus Interchange. Buses that stop along the roads surrounding our location are numbers 157, 178, 66, 506, 173, 174, 176, 187, 985. Buses services which terminate at Bukit Batok Bus Interchange are 61, 77, 106, 173, 177, 189, 852, 941, 945, 947

TO REGISTER, SMS <STUDENT NAME> <SESSION & COURSE NO> <DAY> TO 98530744/ 97860411

For enquries, kindly call 9108 8581

 

Posted in A-Level, H2 Physics, Headstart Classes, Holiday Classes, JC Physics

JC2 (2018) H2 PHYSICS HEAD START PROGRAM

Start Date:  SUNDAY 19 NOV

Time: 11.00 am – 12.45 pm, every Sunday from 19 Nov to 10 Dec 2017 (4 sessions)

Location:   Blk 644, Bukit Batok Central, #01-68. S(650644).

Topic to be covered:  ELECTRIC FIELDS & CURRENT

Focus: CONCEPTUAL UNDERSTANDING & APPLICATION OF SKILLS

Format: Teaching + Worksheets + Discussions

Fee: $320 per student for 4 lessons. (min of 2 students to start)

Note: For 1-1, it is $640.

Course Outline:

19/11: Electric Fields I

26/11: Electric Fields II

3/12: Current of Electricity I

10/12: Current of Electricity II

To register, sms <Student Name><J2H2PHYWHS> to 97860411 / 98530744

_______________________________________

TUITION CLASSES:

jcbutton          secbutton

ipbutton                    pributton

_______________________________________________________________

EDUCATIONAL SERVICES:

hwsupervbutton                   intensivebutton

headststart-1                   private-candidates

______________________________________________________________

By EX-MOE TEACHERS & EXPERIENCED TUTORS

@ BLK 644, BUKIT BATOK CENTRAL, #01-68. S(650644).

CALL 65694897 OR SMS 98530744 OR 97860411.

Posted in H2 Physics Answers

Suggested Answers to 2015 A Level H2 Physics 9646 Paper 3

H2 PHYSICS PRACTICAL

H2 CHEMISTRY PRACTICAL

H2 BIOLOGY PRACTICAL


HOW TO BOOK A LAB SESSION:

(1) Decide which Program or Lab sessions you need or most suitable for, by visiting the webpages of the practical subjects you are interested in (if you can’t find the labs you need, message us at 87762711).

(2) Whatsapp or Message our staff at 87762711 with your Name, Private or School Candidate, A or O level, Subject or Lab Name (e.g Lab PP2), Date and Time of Lab. (Our staff will then guide you on how to register and make payment. If you are not sure about the lab sessions, just state your Name and the Subjects and we will get back to you)

(3) Register Online by clicking below:

(4) Pay Registration fee of $30 via Paynow or funds transfer.

(5) Make the required payment for each lab session at least 5 days before the date of the lab session. (You may also pay for several sessions at one go to ensure that you will have a place in future slots)


Suggested Answers to 2015 A Level H2 Physics 9646 Paper 3

1a) 1. Net external force acting on the system is zero

2. Net torque on the system about any point is zero

bi) Equilibrium system. Ball is falling at constant speed, resultant force is zero.

ii) Not equilibrium. There is resultant force in the form of centripetal force on the satellite due to the earth. There is a constant change in direction therefore there is change in velocity.

2a) 6.33 x 10^7  m

b)Bright fringes get dimmer, dark fringes get brighter.

c)For interference pattern to be seen, a should be much smaller than d. When this condition is not met, fringes cannot be seen. When a becomes too large, the central maximun diffraction bands will not be wide enough to produce inteference pattern.

3a) 14.0ºC

b) With an increase in temperature, the resistance of the thermistor drops. This leads to a drop in the circuit’s total resistance which increases the current through the thermistor, increasing the heating on the thermistor and further lowering the resistance. When the resistance is too low, the whole process will continue and result in a thermal runway, resulting in the thermistor permanently damaged by heat.

4a) Tesla is a unit of magnetic flux density when a uniform magnetic field normal to a wire carrying a current of 1A produces a force per unit length of 1N/m

bi) Force acting on the particle is always normal to the velocity of the particle.

ii) 2.38 x 10^-21 Ns

c) *Line is downwards with a smaller curvature.

5a) A photon is a packet of energy of electromagnetic radiation

bi) 3.84 x 10^-19  J

ii) 8.36 x 10^-25  Ns

c) 52.4º

6ai) Rate of change of velocity

ii) Since the radius of earth is 6400km, several km above the earth’s surface would not affect the acceleration of free fall.

bi) Surface area of the ball is too small or distance traveled by the ball is too short.

ii) 1. 0.299 s

2. 0.0362 s

c) 9.8%

di) The height to fall has now been decreased, thus it takes less time for the ball to travel to the point.

ii) The ball will be affected by the magnetic force exerted onto it, thus reducing the net downward force acting on the ball. As a result, the time taken will be longer.

e) Acceleration will decrease till it reaches zero. When air resistance is equal to the weight of the ball, the resultant force acting on the ball will be zero. Hence it has reached terminal velocity and acceleration is zero.

7ai) 1. 24.04 V

2. 60.5 Hz

ii) There is a heating effect regardless of direction of the current. It depends on the root mean square current instead of the average current. The heating effect is caused by power loss.

bi) The amount of thermal energy required to raise the temperature of 1 unit mass of the substance by 1ºC

ii) This indicates the power loss from the system to the surrounding.

iii) 4.22 x 10^3  J/kg K

c) *same gradient, y-intercept should be more negative.

di) The increase in internal energy of a system is equal to the sum of the thermal energy supplied to the system and the amount of work done on the system

ii)If specific heat capacity is measured at a constant volume, no work is done on system. If specific heat capacity is measured at constant pressure, there will be a change in volume. Hence, there is work done on the gas.

8ai) An object undergoing oscillatory motion with its acceleration directly proportional to its displacement from its equilibrium position. The acceleration is always towards the equilibrium position.

ii) 1. Acceleration is always opposite in direction of displacement. Hence it is oscillating.

2. Acceleration is not directly proportional to its displacement. Hence, oscillations are not simple harmonic.

bi) 1. A wave in which the particles oscillates parallel to the direction of propagation.

2. The speed of the wave means the distance traveled per unit time by a wave front.

ii) 1. 1.20 x 10^-3

2. 1.20 x 10^-3

3. 3.20 x 10^-3  m/s

4. 2.71 x 10^-31  J

iii) Sound waves moves relatively fast in gas but the gas molecules oscillate back and forth about their original positions with relatively small speeds.

ci) Energy of the wave originates from the vibrational motion of the gas molecules.

ii) It is caused by the pressure imbalance from the disturbance of the gas’ uniform density.

 

 

A-LEVEL H2 MATH JUNE HOLIDAYS IN TENSIVE REVISION

A-LEVEL H2 PHYSICS JUNE HOLIDAYS INTENSIVE REVISION

 

JUNIOR COLLEGE / A-LEVEL TUITION:

 

gp              math jc

physics jc               chem jc

poa                mob

f math                econs

_______________________________________________________________________

TUITION FEES

______________________________________________________________

By EX-MOE TEACHERS & EXPERIENCED TUTORS

@ BLK 644, BUKIT BATOK CENTRAL, #01-68. S(650644).

CALL 65694897 OR SMS 98530744 OR 97860411.

Posted in H2 Physics Answers

Suggested Answers to 2015 A Level H2 Physics 9646 PAPER 1 and 2

H2 PHYSICS PRACTICAL

 

H2 CHEMISTRY PRACTICAL

 

H2 BIOLOGY PRACTICAL

 


HOW TO BOOK A LAB SESSION:

(1) Decide which Program or Lab sessions you need or most suitable for, by visiting the webpages of the practical subjects you are interested in (if you can’t find the labs you need, message us at 87762711).

(2) Whatsapp or Message our staff at 87762711 with your Name, Private or School Candidate, A or O level, Subject or Lab Name (e.g Lab PP2), Date and Time of Lab. (Our staff will then guide you on how to register and make payment. If you are not sure about the lab sessions, just state your Name and the Subjects and we will get back to you)

(3) Register Online by clicking below:

(4) Pay Registration fee of $30 via Paynow or funds transfer.

(5) Make the required payment for each lab session at least 5 days before the date of the lab session. (You may also pay for several sessions at one go to ensure that you will have a place in future slots)


Physics Paper 1 MCQ

1) A  2) D  3) C  4) A  5) C

6) A  7) D  8) C  9) A  10) C

11) B  12) A  13) D  14) A  15) A

16) A  17) C  18) A  19) C  20) B

21) C  22) D  23) B  24) B  25) A

26) B  27) B  28) B  29) D  30) B

31) B  32) D  33) B  34) C  35) C

36) C  37) C  38) A  39) D  40) B

 

Physics Paper 2

1. a) EPE = 0.662J

bi) The system has only GPE before the 300g mass is released. After releasing, part of the GPE is converted to KE and to EPE. At the lowest point, once the mass comes to a stop, all of the GPE will have been converted to EPE.

ii) v = 1.21 m/s

iii) 0.40m

2a) Select 2 points from the graph: (6.0, 1.25) and (12.0, 2.50)

(V – 12.0)/(I – 2.50) = (12.0 – 6.0) / (2.50 – 1.25)

V – 12.0 = (6.0/1.25) (I – 2.50)

V = 4.81I

V is proportional to I

bi) 4.8Ω

ii) 1.3 A ,  1.6A

iii) 6.35 V

3a) Incident photons must have energy greater than or equal to the work function of M to emit one electron. Energy of photon is related to the frequency of the electromagnetic radiation by E = hf

bi) Free electrons at the surface are emitted with maximum KE but electrons of the outer shell require more energy to escape thus they will be emitted with less KE. A minimum potential difference is present to stop the photoelectrons with the maximum KE from reaching the collector in order to reduce the current to zero.

ii)It is limited by rate of emission of photoelectrons, which is dependent on the intensity.

c) 9.45 x 10^14  Hz

d) Starts from -2.2v and follows the same shape of the original. The value of y-intercept is doubled due to the doubled intensity.

4a) 0.712 m/s^2

bi) Since the 2 moons move in circular orbits around Jupiter’s center of mass, thus the centripetal force is also the gravitational force due to Jupiter, which acts towards Jupiter’s center of mass.

ii) 2.33

5ai) 4.80 x 10^-14 N

ii) -2.30 x 10^-16 N

b) Electrostatic force on A due to B and B due to A are internal forces. They have the same magnitude but different in direction. Thus the resultant force action on the molecule is zero.

c) 1.6628 x 10^-25  Nm

6a) 128, 54

b) 1510 s

7ai) s = -3.0

ii) -3.170 , -0.693

iii) Plot the point and draw the best fit line.

iv) 3.10

v) There is a linear relationship between ln(y1/m) and ln(l/m) with a gradient of 3.1 and with a y- intercept of -1.02.

vi) 3

b) k = 2.70 x 10^-10

ci) Acceleration is directly proportional to the displacement. The negative sign indicates that the acceleration is opposite to the displacement and is always directed to the position of zero displacement.

ii) 0.560

8.

Apparatus.

Filament lamp, power supply, beaker, thermometer, Stirrer, Stopwatch, Voltmeter, Ammeter, Rheostat, Switch, Weighing machine, Waterproof tape.

Draw a diagram with a filament lamp immersed in water, with the thermometer and stirrer inside the beaker. Draw the circuit of the lamp with connecting ammeter and voltmeter and the power source.

Procedure.

1. Measure mass of water in beaker, m.

2. Insulate the beaker.

3. Connect filament lamp with circuit, wrap the metal cap with the waterproof tape.

4. Set up apparatus as shown.

5. Record initial temperature.

6. Close the circuit and start the stopwatch.

7. When the temperature hits 70ºC, stop the stopwatch and record the readings of the voltmeter and ammeter.

8. Repeat steps 5 to 7 after replacing the hot water in the beaker with the same amount of water at room temperature. Obtain different potential differences by changing the resistance of the rheostat.

Working

1. 1 – (Thermal energy/electrical energy output)

2. Relationship between I and t is given by η = aV^b , where a and b are constants. The equation can be written as lg η  = b lg V + lg a

3. Plot a graph of lg η against lg V and obtain a and b

Accuracy

1. Minimise heat loss to surroundings by using the lid and lagging.

2. Conduct preliminary experiments to decide on the suitable values of resistance and voltage supply.

3. Ensure experiment is not conducted over long periods of time so that efficiency of the lamp is not affected by the thermal energy released.

Safety

1. Handle with dry hands to prevent electrocution.

2. Ensure the circuit is not in contact with the water.

3. Handle the beaker with care when replacing the water.

 

 

 

A-LEVEL H2 MATH JUNE HOLIDAYS INTENSIVE REVISION

A-LEVEL H2 PHYSICS JUNE HOLIDAYS INTENSIVE REVISION

 

JUNIOR COLLEGE / A-LEVEL TUITION:

 

gp              math jc

physics jc               chem jc

poa                mob

f math                econs

_______________________________________________________________________

TUITION FEES

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By EX-MOE TEACHERS & EXPERIENCED TUTORS

@ BLK 644, BUKIT BATOK CENTRAL, #01-68. S(650644).

CALL 65694897 OR SMS 98530744 OR 97860411.