Recent content by Stefenng

My interpretation of that description is of a milliammeter in series with a resistor, and the voltmeter connected across that combination of meter + resistor such that the voltmeter measures the sum of two voltages VA + VR. I don't really get what you mean here. Did u mean that I should...

Hi there, this is one of the question of my assignment. A voltmeter with a sensitivity of 1000 Ω/V has a full scale deflection of 150V. When connected across an unknown resistor in series with a milliammeter, it reads 100V. If the milliammeter reads 50mA, calculate the following: a...

O.O" Solved?

u = (a, (sqrt(6)/2)a, c) v = (f, (sqrt(6)/2)f, e) u + v = ( a + f, sqrt (6 ) ( a+f) , c+ e ) a+f = sqrt(6) ( a+f ) ?? as for multiple part, k(a, (sqrt(6)/2)a, c) =(ka, ka (sqrt(6)/2), kc) ka = ka (sqrt(6)/2), hence subspace S is the subset or R3?

ok...I start to understand a little bit d... if I substitute inside just like wad u say mark, I find that it is weird, the equation I try : sqrt (3) x = sqrt (2 ) y sqrt (3)/ sqrt (2 )x = y u = ( 1, sqrt(3)/sqrt(2) 1 , c ) v = ( 2, sqrt(3)/sqrt(2) 2 , d ) u + v = ( 1, sqrt(3)/sqrt(2) , c...

err...I don't get it still... @.@ let (x,y,z) = ( \sqrt{}2/\sqrt{}3 y,y,z) = y ( \sqrt{}2/\sqrt{}3 ,1,0) + z( 0,0,1) ?

R3 Subspace - Urgent Homework Statement Prove that S={(x,y,z):\sqrt{}3 x=\sqrt{}2 y is a subspace of R3 I'm really confuse with this and I still don't know how to proved it. Can anyone help me with this? I really a newbie in this. >< Homework Equations The Attempt at a Solution...

Homework Statement When a spring fixed at one end is pulled by a force of 8N, the extension is 40mm. Two such springs are joined in series and is pulled to produce a total extension of 40mm. What is the strain energy in the springs.Homework Equations strain energy, U = Fe / 2 or...

ok...thx... ^^

Homework Statement I need to find the average acceleration of a gramophone record. Initial angular velocity, W = 0 Final angular velocity, w = 3.50rad s^-1 angular displacement, 8 = 0.25rad Homework Equations The equation given by the answer is t= 8/w a = ( w - W ) / t the answer is 49.0...