Recent content by pleasehelpme6

Homework Statement (v-4)/(5v+1) The Attempt at a Solution I'm an engineering student, and I'm taking Differential Equations, but I can't remember how to do simple things like this. A walk through explanation would be very much appreciated, I don't have a lot of time to spare. The...

The A-36 steel rod is subjected to the loading shown. If the cross-sectional area of the rod is 50 mm^2, determine the displacement of C. Neglect the size of the couplings at B, C, and D. Please help, I don't have any idea how to begin. I can't seem to sum the forces right.

the distance the package will slide ON THE BELT, before it comes to rest relative to the belt. this leads me to believe it wants the distance it will slide On the belt. if i took the total distance, it would be greater than 7 m, which is very wrong. please clarify what you mean, as i am no...

it asks for "the distance a package will slide on the conveyor belt before it comes to rest relative to the belt"

does that mean the package doesn't change velocity at all from touching the belt? that would mean the velocity is .89 m/s, making T3/belt=.5*m(.89)^2 so... Tstop = 0 = T3/belt + Wfriction T3/belt = -Wfriction ((.5)*.89^2)/(µg) = distance = 0.16 which is incorrect.

could you please elaborate...? with respect to the belt, wouldn't the final energy be zero? or is there some momentum change i missed? (we haven't covered momentum yet so i could easily have missed it)

Packages are thrown down an incline at A with a velocity of 1 m/s. The packages slide along the surface ABS to a conveyor belt which moves with a velocity of 2 m/s. Knowing that d = 7.5 m and µ = 0.25 between the packages and all surfaces, determine... a) speed of the package at C b) distance...

An electron with speed of 3.7e5 m/s enters a uniform magnetic field of magnitude 0.042 T at an angle 39 degrees to magnetic field lines. The electron will follow a helical path. Determine the radius of the helical path. F = (mv^2)/r F = vq * Bsin(39) set F's equal and solve for r r...

Thanks! that explanation makes a lot of sense. I'm sure I can figure the rest out from there!

When a battery is connected to a 110.-ohm resistor, the current is 3.98 A. When the same battery is connected to a 400.-ohm resistor, the current is 1.11 A. Find the emf supplied by the battery and the internal resistance of the battery. Equations: Vemf = i*R I'm not sure how...

thank you! that makes a lot of sense

please.

f(x, y, z) = xe^y + ye^z + ze^x, at (0, 0, 0), directional vector v = <-2, 0, 5> i solved for gradient f = (e^y + ze^x, xe^y + e^z, ye^z + e^x), at f(0,0,0) to be... gradient f = (1,1,1) this would make the answer just be -2 + 0 + 5 = 3 but this isn't right. can someone show me...

Warm air is contained in a piston-cylinder assembly cools slowly from volume of 0.003 m^3 to 0.002 m^3. During the process a spring exerts a force that varies linearly from an initial value of 900 N to final value of 0. Patm = 100 kPa and the area of the piston face is 0.018 m^2. Or, V1 =...

Determine the reactions at the pin A and at the roller at B of the beam. I honestly have no idea how to do this problem. It gives the answers as... Ax = 192 N Ay = 180 N By = 642 N Please help.