Physics marathon (hsc) (7 Viewers)

[miss giggles]

I'm not sure if this is correct but I would say that g would stay the same since g is only depend ant on mass of planet and radius g=Gm/r^2
So since radius and mass are the same shouldn't g stay the same

 

[Sacredoblivion]

Discuss the relationship between thought and reality (8 Marks)

 

[someth1ng]

I think It will not reached the north pole because the force of the earth's rotation cause the ball to be deflected to the right of the pole (Coriolis effect)

It's not exactly "the force of the earth's rotation"...

 

[someth1ng]

Discuss the relationship between thought and reality (8 Marks)

8 marks? Seriously?

 

[egnaro315]

http://www4.boardofstudies.nsw.edu....swer=&courseID=15330&testQuestionID=300393889 need help on this question. Don't know what to do :S

 

[egnaro315]

uze just find the common denominator

Oh right, they are orbiting the same star. Thanks, got it now.

 

[Keelan134]

Do you think that Adolf Hitler made a positive contribution towards the study of Physics??

Well actually this is a syllabus dot point Process information to discuss Einstein's and Planck's differing views about whether Science Research is removed from social and political forces
Planck stayed with Germany and Einstein argued that his work should only benefit society blah blah blah blah. Well whatever Planck and Einstein did during WW2 was motivated by the presence of Adolf therefore yeah Hitler did make a contribution, and positive because it included the study of nuclear technology and v2 rockets and yeah im out hahaha

The relationship between thought and reality is like Einsteins thought experiments were based on his encounters with the world thus his common sense. I dunno how I could go on about it for 8 marks tho...

 

[shongaponga]

http://www4.boardofstudies.nsw.edu....swer=&courseID=15330&testQuestionID=300393889 need help on this question. Don't know what to do :S

Use Kepler's Law of Periods for both planets and equate the of the two planets. As is a constant, we can disregard this in this question.

 

[Capt Rifle]

Define Gravitational Potential Energy (Easy) 2 marks..

 

[Capt Rifle]

Are the vertical and horizontal components in projectile motion dependent on in each other?

 

[GoldyOrNugget]

Define Gravitational Potential Energy (Easy) 2 marks..

I'll have a go. The amount of work a body is capable of performing as a function of the force exerted on it by a gravitational field.

 

[GoldyOrNugget]

Are the vertical and horizontal components in projectile motion dependent on in each other?

No.

 

[nerdasdasd]

Are the vertical and horizontal components in projectile motion dependent on in each other?

They are independent of each other.

 

[Sy123]

Calculate the angle for which an object must be projected, such that the maximum height is equal to half the range of the projectile

 

[Keelan134]

Those of you out there, Define how a slip ring creates AC current

 

[GoldyOrNugget]

Hey Sy you sure do love your projectile motion!

63.43 degrees.

 

[GoldyOrNugget]

Those of you out there, Define how a slip ring creates AC current

lolwut dodgy ass question. A slip ring doesn't create AC current, it transfers it from the brushes to the coil. Also, 'define' is a curious choice of word. It makes more sense as an 'explain'. This question is probably best done through a diagram. Anyway there are two rings, each of them attached to one end of the coil, and the brushes rest against the rings. The rings rotate and the brushes maintain contact with the same respective ring throughout rotation.

 

[someth1ng]

Define Gravitational Potential Energy (Easy) 2 marks..

It is the amount of potential energy that an object possesses due to its presence within a gravitational field.

 

[GoldyOrNugget]

A nice and easy one to get us back on track.

<img src="http://i.imgur.com/lWLPM.png" width="500"/>

 

[bleakarcher]

It is the amount of potential energy that an object possesses due to its presence within a gravitational field.

a mass*

lol