Recent content by howsockgothap

Hello, I recently bought a Dyson vacuum and have been excitedly vacuuming my floors way more than I need to! I have been doing some thinking as well on the matter (yes, vacuuming) and have a physics problem/question. It has been a long time since I studied physics, so I am not equipped to...

Biot-Savart Law-- magnetic field produced by single wire. Homework Statement A wire of length L, carrying current I lies along the x-axis as shown in the picture. A point P is located a distance 2L below the right end of the wire, as shown. a) Determine the direction of the contribution dB to...

Homework Statement Calculate the electric field at a point 2.79 cm perpendicular to the midpoint of a 2.02 m long thin wire carrying a total charge of 5.04 uC. You could integrate BUT if the wire is very long compared to the distance from the wire to where you are calculating the electric...

Homework Statement The wavefunction of a transverse sinusoidal wave on a string has the form y(x,t) = Acos(kx + ωt + φ), where x and y are in m, t is in seconds and φ is the phase constant in radians. The wave has a period T = 24.5 ms and travels in the negative x direction with a speed of...

Thank you! I knew I must have done something ridiculous like that.

Homework Statement A small block is oscillating on a spring with a period of 3.05 s. At t = 0 the mass has zero speed and is at x = 4.35 cm. What is the magnitude of the acceleration at t = 4.30 s? Homework Equations a=-Aω2cos(ωt) ω=2∏/T The Attempt at a Solution ω=2∏/3.05=2.06...

Homework Statement Homework Equations DON'T KNOW The Attempt at a Solution I can honestly say I've never been this confused by a question. At first my mind automatically went to a=qE/m since I have both charge and mass, but it became apparent that the equation was irrelevant...

Hey man, as much as I appreciate the passive aggressive insult, I have, unbelievably, read the book. Several times, in fact. I obviously still don't understand it, which is why I went here for help.

V sub o was velocity, but that is not something I'm sure of, only a wild guess based on equations in our text because our prof didn't discuss this.

θθHomework Statement A simple pendulum of mass 20.0 g is suspended by a length of string 1.0 m. It is pulled from equilibrium so that it's raised 10.0 cm and released. Angular position given by θ(t)=θmaxcos(ωt+∅) What is the period? What is the maximum velocity of the pendulum? What is the...

Found a mistake in my own work already. Should be -sin2t

Alright, so I use the double angle formula and the integrand becomes -sqrt3/6 (1+cos2t) Plus of course t/sqrt3 from earlier Then I just work that out, and I ended up with (sqrt3/6)(t+sin2t) And if that's right, I think I've got it from there.

Right, so fixing both of those mistakes I work it down to 1/sqrt3 - sqrt3/3sec2(t) since it becomes (1/(3sec2t) - 3/(9sec4t)) sqrt3sec2tdt and at least according to my messed up math that just leaves me with t/sqrt3 - the integral of (3/sqrt3) cos2t

If x = sqrt3 tan(t) then dx=sqrt3 sec2(t) and x2+3=sqrt3 sec(t) I plugged that into 1/(x2+3)dx -3/(x2+3)2dx so: (sqrt3 sec2(t))/(sqrt3 sec(t)) dt - 3sqrt3sec2(t)/3sec2(t) I canceled out everything I could to get sec(t)-sqrt3 dt... which is wrong, obviously. I guess that should...

Ok working that out I get sqrt3sec2(t)/(sqrt3sec(t)) - 3sqrt3sec2(t)/3sec2(t)... so by this it seems I need to take the integral of sec(t)-sqrt3 dt Does this seem correct?