# physics???

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#1
can anyone teach me physics in 3 days ????

love Katy ***
0
17 years ago
#2
Force = Mass x acceleration
and so on...
0
17 years ago
#3
Thats a toughy, Physics unfortunatly is a test of memory, you have to learn and memorise so many formulae, once you get past that, the application is quite simple.

I'm particularly chuffed I ditched Physics after AS, other wise my subject would be Maths, Further and Physics, and I would have got pig sick of equals signs, and wierd symbols. Geography thankfully offers a little bit of respite, and also requires some essay writing, a skill that wouldn't have been acquired if I'd ditched it in favour of Physics.

Good Luck anyway Katy.
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17 years ago
#4
Learn these super fun equations and you'll be ready for any physics exam:

Potential Difference = Resistance x Current
Charge = Current x time
Power = Potential Difference x Current or
Power = Current (squared) x resistance
Energy = Charge x Potential Difference
Force = Mass x acceleration
Weight = Mass x Gravity (Earth's gravity is 10 btw)
Density = Mass / Volume
Velocity = Distance / Time
Acceleration = Force / Mass
Pressure = Force x Area
Frequency = 1 / time period
Wavelength = Frequency x wave formula
Work Done = Force x distance
Power = Work done / time
Potential Energy = Mass x Gravity x height
Kinetic Energy = 0.5 x Mass x velocity (squared)
Efficiency = Work output / total energy input
Physics = The most fun you can have with your clothes on.

Enjoy!
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17 years ago
#5
hey mr white....u not got msn messenger?
xxx
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17 years ago
#6
Lol at the last one, you're my hero.
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17 years ago
#7
I haven't got MSN - it's too complex for a technologically backwards individual like me.
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17 years ago
#8
are u doin force, fields and energy?
if so its a nightmare, im tryin now and cant grasp ne of it.

as for the ppl who say its just formulae...I wish!

xxxxx
0
17 years ago
#9
mr white how dissapointin....u shud get it...

x
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17 years ago
#10
Originally posted by Mr White
Pressure = Force x Area
No, pressure is force per unit area.
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17 years ago
#11
Originally posted by Mr White
Learn these super fun equations and you'll be ready for any physics exam:

Potential Difference = Resistance x Current
Charge = Current x time
Power = Potential Difference x Current or
Power = Current (squared) x resistance
Energy = Charge x Potential Difference
Force = Mass x acceleration
Weight = Mass x Gravity (Earth's gravity is 10 btw)
Density = Mass / Volume
Velocity = Distance / Time
Acceleration = Force / Mass
Pressure = Force x Area
Frequency = 1 / time period
Wavelength = Frequency x wave formula
Work Done = Force x distance
Power = Work done / time
Potential Energy = Mass x Gravity x height
Kinetic Energy = 0.5 x Mass x velocity (squared)
Efficiency = Work output / total energy input
Physics = The most fun you can have with your clothes on.

Enjoy!
you don't know physics, do you?
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17 years ago
#12
he was just tryin to help

xxx
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17 years ago
#13
Originally posted by LittleMissSmile
he was just tryin to help

xxx
ahhh... how sweet.
0
17 years ago
#14
I know physics well enough - I haven't taken it at A-Level but I got an A* at GCSE.

Those equations were from memory and its been over a year since I last used them, so I think I recited them well enough.
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17 years ago
#15
Originally posted by Mr White
I know physics well enough - I haven't taken it at A-Level but I got an A* at GCSE.

Those equations were from memory and its been over a year since I last used them, so I think I recited them well enough.
Sorry, I didn't mean to come across as being rude, I was just emphasising the fact that A-level physics has more complex formulae.
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17 years ago
#16
I wouldn't know - I'm more of a biology person.
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17 years ago
#17
dont owrry bout not knowin much... most of the formula are given in the formula sheet.. just learn when to u se which... eg the electrical field strength due to a wire.. or due to a coil... things like that... read the letts revision guide for a quick summary.. they are quite good reminders of the theories... but really u can get by by just knowin the meaning of things like field strength,, how linacs and accelarators work etc.. its not too hard.. if u know what the questions are askin of u
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17 years ago
#18
This is what I hate about Physics. The calculations are basic at worst, but it's deciphering the info.
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17 years ago
#19
Forces, Fields and Energy is a pile of rubbish - I failed in Janurary and I'm still finding it difficult...apparently the key to doing it is to know all the formulae!! Thats a task within itself there are about 25 of them!
0
17 years ago
#20
25? That's simple - just use a locus.

Sincerely
GC White
0
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