Vertical Definition and 1000 Threads

Homework Statement [PLAIN]https://wug-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?cc/DuPage/phys2111/fall/homework/Ch-08-GPE-ME/twomasses_vertical_spring/3.gif A block of mass 7 kg hangs on a spring. When a second block with an identical mass of 7 kg is tied to the first, the...

Homework Statement Distance - 5m height 1m Homework Equations vf^2=Vo^2+2ay The Attempt at a Solution I know vf^2 = 0, and I'm trying to find vo^2, and I also know y is the height so that would be 1m, is a 9.8? If It is I would get this 0=vo^2+19.6. and to find vo^2 I would...

Show the pre-image of a vertical line Re(w)=c under f... Homework Statement a) Show that the pre-image of a vertical line Re(w)=c under f is a circle centered on the line Re(z) = -1 and tangent to the real axis Im(z) = 0. b) How does such a circle intersect the circle |z| =1? Here's f by...

Homework Statement For what value(s) of t is <3t2-t3, 2t2> a vertical vector? The Attempt at a Solution I set them equal to each other, and received t=1. Is that what I am supposed to do?

where in the definition of vertical subspace we understand that the notion of canonical vertical vector: a vertical vector is a vector tangent to the fiber. ?

Homework Statement A softball pitcher rotates a 0.236 kg ball around a vertical circular path of radius 0.633 m before releasing it. The pitcher exerts a 30 N force directed parallel to the motion of the ball around the complete circular path. The speed of the ball at the top of the...

Homework Statement A stone is thrown vertically upward with a speed of 13.5 m/s from the edge of a cliff 74.0 m high (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel? Homework Equations i am only...

find all vertical tangent lines of a curve - more than one variable! curve : xy^2 - x^3y = 6 derivative : (3x^2y - y^2) / (2xy - x^3) question : find the x coordinate of each point on the curve where the tangent line is vertical. after some consideration, i decided that when the derivative...

If pump's motor load is around 33 ampere and 48 volts, how do you calculate the maximum flow and the head? Note the it is a vertical centrifugal pump

Homework Statement You are sitting on the edge of your school with a tennis ball in your hand. Your friend is doing the same thing sitting on the ground leaning against the wall. You both see a toy helicopter going along the line of the second floor. You both decide to take the helicopter...

Homework Statement A Soccer ball is projected at a certain angle (ϴ) above the horizon. It travels a horizontal distance of 1.2x102m in 3.0s. a) Find the horizontal velocity b) Find the initial vertical velocity (VV1). c) Find the magnitude and direction of the initial velocity...

Homework Statement a mountain climber plans to jump from A to B over a crevasse. Determine the smallest value of the climbers initial velocity Vo and the corresponding value of the angle alpha so he lands at B Homework Equations A to B is 1.8m horizontal distance and B is lower than A...

Homework Statement A ball swings in a vertical circle at the end of a rope 1.30 m long. When the ball is 36.1° past the lowest point on its way up, its total acceleration is (-22.5 i + 20.2 j) m/s2. (a) Determine the magnitude of its radial acceleration. (b) Determine the speed and velocity...

Hello, Do you have any idea where I could find my formula for the Grashof N°, Nu and Heat? Thank you very much for your help Steve

Hello, I have an electric cable in a vertical steel Tube. I estimated the temperature that will reach the JTube exposed to sun radiation. I came with these equations QCable+ Qsun - Qradiated = mc( Tfinal - TAmbient) where QRadiated= k.A.(Tfinal^4-TAmbient^4), QSun=234 [W/m^2] * A...

PRObLEM SOLVED> :)

So I've been stuck on this problem for hours, I just can't seem to put the pieces together... Homework Statement Two basketball players of equal height, (and jumping with same initial velocity, etc.) by jumping they raise their centers of mass the same distance "H". The first player (A)...

suppose we have a principle fiber bundle P at a point p \in P we have the decomposition T_pP=V_pP + H_pP it is said that the vertical subspace V_pP is uniquely defined while H_pP is not i cannot understand this point the complement to a unique subspace is surely unique, i think. it is a...

Ball thrown into a vertical jet? Homework Statement Like any good physicist, I always have a ball in my pocket to throw into the vertical jet of any fountain I happen to find. The result is entertaining (at least I think so). Explain, with a sketch, what you expect to see (you need not...

I am currently producing an exam paper. My friend suggests me using the exam document class. It's quite convenient most the time and I almost finish my work. But there are 2 things that I am not satisfied with: (1)the default spacing between questions, parts, subquestions How can I adjust the...

Consider a vertical pipe partially filled with liquid. The pipe is open at the lower end and closed at the top. See the attached picture. Will the liquid fall out or not? In a small diameter pipe a stable meniscus will form due to surface tension and prevent the water from falling out. In a...

Homework Statement A spring is held vertically between two supports separated vertically. That stationary wave set up looks like this: http://img690.imageshack.us/img690/9417/80122335.jpg Deduce what you can about the speed of the waves in the spring. (Note that the wave pattern is slightly...

1. 1. Homework Statement : How to calculate minimum time period 't' required to complete a vertical circular motion by a cone filled with water, so that the water doesn't fall?2. Homework Equations : v^2 = gR * [ 3 + 2 cos (theta) ] obtained by applying law of conservation of energy. 3. 3...

Homework Statement A spring with a spring constant of 450 N/m hangs vertically. You attach a 2.2 kg block to it and allow the mass to fall. What is the maximum distance the block will fall before it begins moving upward? Homework Equations I'm not exactly sure how the conservation...

Homework Statement The question is: The weightless beam, ABCD, shown in Figure below is supported by a pin support at B, and a roller bearing at C. There is a 4 kN/m UDL along the whole beam, as shown. There is an 11.2kNm clockwise couple at A. The vertical reactions of B and C...

Hello, Im new to the forum, i joined to ask a question about a boat I've been obsessing about for awhile. My idea is an aluminum sail boat (27-40') that has its mast removed and replaced with say a 3-4kw vertical wind generator (350lb) i know that's a bit heavy but I am sure the wind forces are...

Homework Statement The Tower of Doom at Six Flags America lifts its riders to a height of 42.7 m, then releases them to free fall for 21.6m. How fast are the riders traveling before the magnetic induction braking system starts to slow them down?Homework Equations t = \sqrt{}2d/g The Attempt...

Homework Statement A 0.2kg mass attached to a rope 1.6m long is being spun in a vertical plane. Find the minimum frequency. Homework Equations F = 4(pi^2)(r)(f^2)(m) Ft min = Fc - mg - minimum frequency occurs at minimum tension The Attempt at a Solution I had this question...

Homework Statement A 0.028 kg bullet is fired vertically at 165 m/s into a 0.15 kg baseball that is initially at rest. How high does the combined bullet and baseball rise after the collision, assuming the bullet embeds itself in the ball? Homework Equations mv + mv = mv + mv The...

hello. i need to match electric motor to propeller/fan to my outdoor aeroduim wind tunnel. my requirements goal is to get a 2.00 meter diameter propeller with 190kh wind speed . which electric motor (type,power) would you think will properly match for this requirements ? thank you.

Is it possible to graph a vertical line such as X=2 on a graphing calculator? How would one graph a vertical line on the graphing calculator?

Homework Statement A spring with spring constant k = 55 N/m and unstretched length of L0 is attached to the ceiling. A block of mass m = 3 kg is hung gently on the end of the spring. a) How far does the spring stretch? ----------ANSWER: .53509 m This is the hard part... **Now the...

Homework Statement Restate the vertical projectile problem in a properly scaled form. (suppose x<<R). d2x/dt^2=-g(R^2)/(x+R)^2 Initial conditions: x(0)=0, dx(0)/dt=VoFind the approximate solution accurate up to order O(1) and O(e), where r is a small dimensionless parameter. (i.e. the...

Homework Statement A woman bungee-jumper of mass 60 kg is attached to an elastic rope of natural length 15m. The rope behaves like a spring of spring constant k= 220Nm. The other end of the spring is attached to a high bridge. The woman jumps from the bridge. a. Determine how far below the...

hi We all know when velocity of fluid increases then cross section decreases for same mass flow rate and this can be well seen at water flowing from a height as in waterfalls. But why this doesn't happen when water flows down through a vertical held pipe of constant cross section. Well you may...

Homework Statement Has anyone ever been on one of these. (I admit I have always been too chicken.) Can anyone explain to me what was felt at the bottom of the first drop and the physics why that was so. Also, estimate the time when the car began to slow down as a fraction of the total...

Homework Statement A stone is tied to a string of length l. Someone whirls the stone in a vertical circle. Assume that the energy of the stone remains constant as it moves around the circle. Calculate the minimum speed that the stone must have at the bottom of the circle, if the string is to...

Hello! Iam a student doing my project at an industry I just encountered designing shafts we use vertical spindles with a gear which meshes with an internal gear near the top end of the spindle, i just wanted to know whether i need to design the spindle for both torsion and bending or should...

In this instance forgo the particle part. I'm thinking more here like the way a railgun works. Or how some rollacosters can take you from 0 to 60kmph. Lets say we wanted to make a railgun that uses a large loop to continual increase velocity to a desired point, then release it into an...

Hello there, I have a question, I wonder if you can help me. Homework Statement I am using scales to measure the volume of liquid coming from a bottle, and then differentiating this volume to give flow rate. The bottle emits a constant flow rate and I hold it so that the stream falls...

Is there a term for the vertical elongation of a planet? This would be the angular distance above the horizon that a planet appears at the instant the sun sets, or in mathematical terms it would be: x=elongation theta=angle between the ecliptic and the horizon "vertical elongation" = x *...

Homework Statement Does changing the thrust(amount of gunpowder) in the rocket alter both the horizontal and vertical speeds? Homework Equations I worked this bit out Rocket A has less gunpowder and horizontal motion was 8m/s Rocket B with more gunpowder was 10m/s [b]3. The...

A 1.00 kg block is compressed a distance of x = 0.130 m against a vertical massless spring with spring constant 280 N/m. The block is released from rest. How far above the spring's equilibrium point does the block travel? I used conservation of energy and got 0.5kx^2 + 0.5mv^2 + mgh =...

Because I am working quite a lot with balloons (still theoretically though), I have come across reports of some balloon flights in the 19th century, which gave balloon ascent speeds of up to 15 m/s and descent speeds up to -40 m/s. I agreed to the comment to that text, that normally balloons...

Vertical Farming... (And could it Profitable) Just looking for your take here folks, speak your mind. Kind of an interesting idea, I'll sure say that.

hi, can anyone help me with the formula for a vertical Column (C-Channel) subjected to Eccentric Loading? Regards, Subbby

Homework Statement A bucket is rotated in a vertical circle such that the water just does not fall. Radius of the circle is R. Gravitational acceleration: g. Find the Time period of one circular motion. http://img148.imageshack.us/img148/6583/bucket.jpg The Attempt at a Solution I...

Find the total mass that occupies a solid region D bounded by a sphere of radius 3 centered at the origin and z = 1 if the density of the function is (x, y, z) = 1/1+x^2+y^2+z^2 . I would like to be able to do this problem using spherical coordinates but I am unsure about how...

Help me understand exactly what is going on here. I'll put up an attempt at my solution: Find the tangent lines at the pole r = sin5o, [0,pi] (note: o represents theta) Equation: dy/dx = [f'(o)sino + f(o)coso]/[f'(o)coso - f(o)sino] f(o) = sin5o f'(o) = 5cos5o plugging everything...

An engineer is riding The El standing next to a bot holding a yo-yo which is hanging down. As the train starts to move, the boy looks at the engineer strangely as he whips out a protractor and measures a 4.19 degree angle between the string of the yo-yo and the vertical. The engineer quickly...