Recent content by fs93

Homework Statement I have resolved three vectors to get the final equations with two unknowns. F [force] X [Angle] FcosX = 4.1 FsinX = 6.4 Homework Equations The Attempt at a Solution Here is what I tried to do but failed miserably. sinX=6.4/F X=arcsin(6.4/F)...

That's what I'm going to practice then. Thanks a million.

Thanks, that really clears things up. But is there a method that I can always apply to such a question? Or do you always have to keep doing trial and logic until you find the correct function?

Homework Statement The function f is defined by f(x) = x^3 Find an expression for g(x) in terms of x in each of the following cases. (a) f [ g(x) ] = x+1 (b) g [ f(x) ] = x+1 Homework Equations The Attempt at a Solution I got the same answer both times. g(x) = cubic route...

Their y components as in horizontal components? And by equate them, what do you mean?

Homework Statement I've got a diagram but here's the question. Two tugs A and B pull a ship along the direction XO. Tug A pulls the ship with a force of 30kN at an angle of 15°. Tug B pulls the ship with a force of 18kN at an angle of [theta] Find the angle [theta] Homework...

Homework Statement The index of refraction for blue light in plastic is 1.46 and for red light is 1.39. Determine the angular spread of the spectrum leaving the plastic block [presumably to air] for a beam of white light incident at angle of 45° to the plastic block.Homework Equations...

Gotcha. Thanks Bob for Short :)

Is that so? Aren't zeros after a decimal completely irrelevant? Especially considering that an ammeter will give you a reading of one decimal place.

What do physicists agree on the number of significant figures to use? I've done some research and I found that the answer has the same number of significant figures as the least precise value used to calculate it. ex: V=IR [I=1.25474] [R=5.2] Hence, voltage is simply 6.5? Thanks...

Thanks both, I was looking for something more like Eldudrino's equation and I will be using it. Cheers! FS

Hello fellow physicists :) I have recently done an experiment and am trying to propagate the uncertainty. Unfortuantely, I haven't done that in years, and need to remember how its done. For example: When theta= 20 (+-2) I want to find sin20 and the uncertainty: sin20=0.34 (+-?) How can I...