Paul C.

As a hobby, I've been trying to study binary stars on a physics level, and I'm pretty confused as to how to approach problems since I've never really done this sort of math before. I'm using this... more

Assume I have a large amount of charge, +Q, that I can distribute between 2 point particles such that one particle gets +fQ of charge, and the other gets +(1-f)Q, where 0≤f≤1. (a) Use the first and... more

Find a particular solution to each of the following equations trying a solution of the given form and solve for coefficients. dy/dt + 2y = sin(t). y(t) = Asin(t) + Bcos(t)For solution i found y =... more

Find the equation for the plane through the points P0(−5,−3,−4)​, Q0(0,5,2)​, and 26 for x R0(4,−1,4) using coefficient 26 for x

Solve the first order linear differential equationdy/dx + 4y= -9x^3 - 5x- 2. y(0)=0. y(x)=??

Find the general solution of the equation by the power series method.y''-2xy'-2y=x

A uniform 2 kg disk of radius 25 cm is rotating around its central axis at an angularspeed of 20 rad/s. At time t=0, a man begins to slow it at a uniform rate until it stops at t = 8 s.(a) By time... more

A spring attached to 2 kg block is compressed by 20 cm and then released. If thecoefficients of friction between the block and the floor are μs = 0.52 and μk = 0.38,determine how far does the block... more

A uniform rod rotates in a horizontal plane about a vertical axis through a point which is 2m away from its center. The rod is 8 m long, weighs 12 N, and rotates at 240 rev/minute.Calculate(a) Its... more

Let F=<4x+y^2,9y+z^2,2z+x^2>Use Stokes' Theorem to evaluate ∫CF⋅dr, where C is the triangle with vertices (5,0,0), (0,5,0), and (0,0,5), oriented counter clockwise as viewed from above.

In the flow of a fluid there is a galvanized steel duct (e = 0.180 mm; D = 100 mm); Q = 20 L/s; ν = 3604 x 10-4 m2/s; γ = 1,324 kgf/m3. The question is: what is the head loss in fluid m.c. and the... more

Knowing that W = 12 kN, draw the shear and bending-moment diagrams for beam AB and determine the maximum normal and shear stresses due to bending. PLEASE DETERMINE THE SHEAR STRESSlink for image:... more

Can someone tell me if this makes sense and if this is what hysteresis is in short.For Example:When looking at a temperature gauge the temperature is increasing but the gauge is not showing true to... more

Please help as I've been stuck on this for days!   An unlucky astronaut plunges radially into a Schwarzschild black hole, starting from very far away so that the astronaut's proper time τ is... more