AS PHYSICS UNIT 1

[Vampire-Love4ever]

Hello/Salam,

I have my exams on 12th Jan [re-sit]!
I am really worried. I did the pastpapers and wel. . . I did ok in them. :S
I have the Hodder Education textbook. It's not so helpful at the moment. :/


Any tips please? I am really stressed out at the moment!

[elemis]

Pray.

[The Golden Girl =D]

Hello/Salam,

I have my exams on 12th Jan [re-sit]!
I am really worried. I did the pastpapers and wel. . . I did ok in them. :S
I have the Hodder Education textbook. It's not so helpful at the moment. :/

Any tips please? I am really stressed out at the moment!

Dude , Dude , Why Are you panicking when you Still have a WHOLE Month to prepare !!! what you're doing does NOT make any sense AT ALL . this is NOT the way to handle this cuz it'll simply ruin ur exam from Right Now.

What you Need to do is the following :

1. Since you've got Enough Time Work your butt-off every single day from the Moment your done reading this.

2. Do NOT Panic , Once you Do A lot of Past papers and Work sheets you'll get the hang of it and I'm sure u'll Ace it =D

3. What Ever Tiny Doubt you have don't just say 'Bleh' , You've Got to take this Seriously and ask about it over here and We'll explain Until you get it

4. Take the Syllabus step by step Once you're done with something ,make sure you Understand it 100% .

5.After you finish the syllabus with yourself start doing a WHOLE Bunch of Past papers !

6.If you have Any doubts as I said , we're here to Help

7.Have Faith in the Lord & Pray =]

Good Luck to both of Us

The past papers I was talking about are the 2009 & 2010 ones as well as files in this thread :

https://studentforums.biz/pastpapers/edexcel-examwizard-questions-for-as-a2-uints-for-bio-phy-chem/

[Vampire-Love4ever]

Dude , Dude , Why Are you panicking when you Still have a WHOLE Month to prepare !!! what you're doing does NOT make any sense AT ALL . this is NOT the way to handle this cuz it'll simply ruin ur exam from Right Now.

What you Need to do is the following :

1. Since you've got Enough Time Work your butt-off every single day from the Moment your done reading this.

2. Do NOT Panic , Once you Do A lot of Past papers and Work sheets you'll get the hang of it and I'm sure u'll Ace it =D

3. What Ever Tiny Doubt you have don't just say 'Bleh' , You've Got to take this Seriously and ask about it over here and We'll explain Until you get it

4. Take the Syllabus step by step Once you're done with something ,make sure you Understand it 100% .

5.After you finish the syllabus with yourself start doing a WHOLE Bunch of Past papers !

6.If you have Any doubts as I said , we're here to Help

7.Have Faith in the Lord & Pray =]

Good Luck to both of Us

The past papers I was talking about are the 2009 & 2010 ones as well as files in this thread :

https://studentforums.biz/pastpapers/edexcel-examwizard-questions-for-as-a2-uints-for-bio-phy-chem/

I am worried because it's a re-sit and that scares the hell out of me!
Anyways, I''keep praying to Allah and Thanks!
I feel better now
Inshaa Allah our exams will go great!
Good luck!

[The Golden Girl =D]

I am worried because it's a re-sit and that scares the hell out of me!
Anyways, I''keep praying to Allah and Thanks!
I feel better now
Inshaa Allah our exams will go great!
Good luck!

InshAllah we both do =]

[studz]

hey being a little off topic, c1 and c2 exams both are on the same date and time!
i will be giving them both this january..how will i be doing both papers at the same time? 

[elemis]

hey being a little off topic, c1 and c2 exams both are on the same date and time!
i will be giving them both this january..how will i be doing both papers at the same time? 

You'll have a break in between the two.

[Vampire-Love4ever]

Hey,
I have some doubts. Please help me out here

Q1- Explain the experimental procedure to find centre of gravity of an irregular object.

Q2- If in a collision, the loss of kinetic energy is 0.08J.
Will it be elastic or inelastic collision?

Q3- How to use strobe photography or video camera to analyse motion?

Q4- What are coplanar vectors?

Q5- Application of mechanics for safety or to sports.

Q6- Explain the term of tensile/ compressive stress and breaking stress.

[Vampire-Love4ever]

Some more doubts :$

Q7- A school treasure hunt uses the following set of directions:
     A, 80m at 45 degree
    B, 40m at 150 degree
    C, 50m at 180 degree
    D, 60m at 270 degree.
a) Team 1 follows the direction correctly. Draw a vector diagram to find their final displacement.
b) Team 2 gets the directions mixed up and follows them in the order C-B-D-A. What effect will this have on their final position compared to team 1?

Q8- A block is sliding down a plank at a constant speed. The weight of the block is 5N and the plank is 35 degree to the horizontal. Sketch a diagram for the three forces and use it to calculate the friction.

Q9- A ball is kicked off a flat with a horizontal velocity of 12ms^-1. How would you :
a) Calculate the horizontal distance travelled after it has fallen 15m?
b) Calculate the resultant velocity after 1.9s?

Q10- During a school play, a dagger is kicked and slides off the stage with a horizontal velocity of 1.5ms^-1. It lands on the floor a horizontal distance of 80cm away. Calculate the height of the stage.

Q11- What is the volume of a cylinder, of length 26cm and diameter 56mm.

Q12- Calculate the force applied to a surface of 220mm^2 to create a pressure of 10MPa.
Give your answer in kN.

Q13- Estimate average acceleration of a car travelling at 6mph in 8.0s.

Q14- A boat of mass 800kg is pulled along the sand at constant velocity by a cable attached to a winch. The cable is 15 degree to the horizontal.
Draw a free body force diagram for the boat. Label the forces: Tension, Friction, Normal reaction and weight.

Q15- If volume of water displaced for a person having weight 600N is 0.05m^3 in the Dead sea. How is this compared with the volume that needs to be displaced for the person  to float in a swimming pool?

Q16- A spring of length 10cm extends to 12.5cm when a 8.0N weight is suspended from it. Calculate the spring constant of the spring.

[Vampire-Love4ever]

Q17- Draw a free body force diagram for a vertically ascending balloon. Label Upthrust, Drag and Weight.

[The Golden Girl =D]

Hey,
I have some doubts. Please help me out here

Q1- Explain the experimental procedure to find centre of gravity of an irregular object.

Q2- If in a collision, the loss of kinetic energy is 0.08J.
Will it be elastic or inelastic collision?

Q3- How to use strobe photography or video camera to analyse motion?

Q4- What are coplanar vectors?

Q5- Application of mechanics for safety or to sports.

Q6- Explain the term of tensile/ compressive stress and breaking stress.

Q1 ] The materials needed were prepared. The shapes of regular object,
irregular object, a letter, and a number were cut out from the cardboard pieces.
Small holes at non-collinear points A, B, C were punched on each piece. A
cardboard piece was suspended by means of the nail-like support mounted on
the stand through the hole at point A. The cardboard was hung loosely from the
support. A plumb bob was suspended from the support with the cord extending
down in front of the cardboard. A line was drawn on the cardboard along the path
of the cord. The cardboard was removed and was suspended again through
another hole. The line was drawn again. The intersection of the two lines was
Page 5 0f 14 marked as C (the center of gravity). These steps were repeated for the other shapes indicated

Source :http://www.scribd.com/doc/6822863/center-of-gravity

the idea of this :
http://www.blurtit.com/q564403.html

Q2 : this is more of MECHANICS than Physics , so I really don't think it's a part of the Syllabus anymore

Q3 : Never heard of it  

Q4:
coplanar, is that points belong to the same plane

http://in.answers.yahoo.com/question/index?qid=20061003205708AADrwNX

and

http://www.meritnation.com/discuss/question/456953/what-is-coplanar-vector

Q5 : I don't Understand it and AS I Said in Q2.

Q6:
Tensile Strength/stress ; the Maximum Stress that the material withstands before breaking (fracturing)

http://www.tutorvista.com/physics/breaking-stress
and
http://www.tutorvista.com/physics/tensile-stress

I hope I helped =]  

[elemis]

Hey,
I have some doubts. Please help me out here

Q1- Explain the experimental procedure to find centre of gravity of an irregular object.

Q2- If in a collision, the loss of kinetic energy is 0.08J.
Will it be elastic or inelastic collision?

Q3- How to use strobe photography or video camera to analyse motion?

Q4- What are coplanar vectors?

Q5- Application of mechanics for safety or to sports.

Q6- Explain the term of tensile/ compressive stress and breaking stress.

Take the irregular object and make a hole towards it's edge. Hang from the hole using a retort stand. Attach a plumb line to the hole and allow it to fall freely. Then trace the line made by the plumb line.

Redo this procedure twice over and where the lines intersect, that is the COG.

2. When there is a loss in KE with regards to a collison it is considered to be inelastic.

3. set the strobe camera to take a picture every 0.1s. Next place a vertical metre rule in front of the camera. Drop a ball from the top of the metre rule and at the same time start the camera.

Using the equations of motion speed, acceleration etc. Can be determined.

[The Golden Girl =D]

Q17- Draw a free body force diagram for a vertically ascending balloon. Label Upthrust, Drag and Weight.

Draw a DOT like I'm doing here :
                   ^ (Viscous) Drag
                   1
                   1  
                   1
                   ^ Upthrust
                   1
                   1
                   1
                   .
                   1
                   1
                   Arow going downward -> Weight



the one represents the Arrow

[elemis]

8. 5cos55 - F = 0

It is equal to zero since there is no acceleration.

Solving for F gives 2.87N

[Vampire-Love4ever]

Draw a DOT like I'm doing here :
                   ^ (Viscous) Drag
                   1
                   1  
                   1
                   ^ Upthrust
                   1
                   1
                   1
.
                   1
                   1
                   Arow going downward -> Weight



the one represents the Arrow

Firstly, thanks for your help
I have a question regarding this.
Why will the drag be upwards? Shouldn't it oppose the motion of the balloon and be downwards?