Vertical Definition and 997 Threads

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

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...

The shear modulus of aluminum is 2.4 × 1010 N/m2. An aluminum nail of radius 7.5 × 10–4 m projects 0.035 m horizontally outward from a wall. A man hangs a wet raincoat of weight 25.5 N from the end of the nail. Assuming the wall holds its end of the nail, what is the vertical deflection of...

Homework Statement I need to solve \int_L \bar{z}-1 where L is the line from 1 to 1+2i. Homework Equations The Attempt at a Solution I know that I need to set z equal to the equation of the line and then integrate, but in this case I'm not sure how to express the equation of...

Homework Statement An object of 6.0kg is whirled round in a vertical circle of radius 2.0m with a speed of 8.0m/s. If the string breaks when the tension in it exceeds 360N, calculate the maximum speed of rotation, and state where the object will be when the string breaks. Homework Equations...

Homework Statement An object of mass m=200g slides down a frictionless ramp from a height H= 60 cm. Near the bottom of the ramp, the path changes into an arc of a circle with radius r= 20 cm. The arc has coefficient of kinetic friction μk=0.4. The angle θ=120° and points P1 and P2 which are the...

Homework Statement A liquid is flowing through a horizontal pipe whose radius is 0.02m. The pipe bends staight upward through a height of 10.0m and joins another horizontal pipe whose radius is 0.04m. Homework Equations what volume flow rate will keep the pressures in the two horinontal...

I am a little confused about a histogram of force measurements. I was asked for my physics lab to state what the vertical axis and horizontal axis represent for a histogram of force measurements? the physics lab consists of pulling a wooden block with a force sensor to record the tension...

Homework Statement In a cathode ray tube (CRT) used in older television sets and oscilloscopes, a beam of electrons is steered to different placed on a phosphor screen, which glows at locations hit by electrons. The CRT is evacuated, so there are few gas molecules present for the electrons to...

Homework Statement At x=3 does the function y=x^3 + (x-3)^(1/3) have a vertical tangent, cusp, corner or none? The Attempt at a Solution I took the derivative y'=3x^2 + 1 / 3x^(2/3) then i replaced 3 in which gave 27 + 1 / 0 I don't understand how to come to the correct...

Piecewise continuous --> NO vertical asymptotes Why is it impossible for a piecewise continuous function to have vertical asymptotes, per this website: http://www.mathwords.com/p/piecewise_continuous_function.htm?

18. An elevator that weighs 3.5 x 103 N is accelerated upward at 1.0 m/s2. What force does the cable exert to give it this acceleration? A. 357 N B. 0 N C. 3500 N D. 3857 N (For this quesion I was really confused and I guessed that the force of tension in the cable was what the cable...

Homework Statement A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof a time of 1.14 s later. You may ignore air resistance. A.) If the height of the building is 20.6 m, what must the initial speed be of the first ball if both are...

I'm having trouble selecting a suitable motor to lift a single leaf 1000kg door. To cut down on power costs i plan to use perfectly (or as close as i can get) balanced counterweights. The door is to be lifted 4m vertically using wire rope hung over two sheaves connected to the respective...

Homework Statement Santa is in trouble. His reindeer just made a rough crosswind landing on the snow covered apex of this gingerbread house. Upon impact the hitch breaks free and the reindeer shoot skyward leaving Santa teetering on the very peak. As he slightly shifts the sleigh tilts...

Homework Statement Studying the mirage, we can assume that the index of refraction depends only on the vertical coordinate z. A ray of light starts from {0,0} with angle \beta\leq30. It's trajectory fits on an ellipse with major axis a and minor axis b. a) Give n(z)=? b) What is the trajectory...

Homework Statement An object of mass m is attached to a light rod of length r which is driven by a motor at a steady rate. The object performs uniform vertical circular motion. Centripetal force is provided by tension and weight. Draw the net force acting on the mass when the mass is at a...

Homework Statement Given a Ferris wheel that rotates 5 times each minute and has a diameter of 19 m, with the acceleration of gravity as 9.8 m/s^2, what is the centripetal acceleration of a rider? Answer in units of m/s^2. (There's a diagram that shows a ferris wheel with radius 9.5 m spinning...

Homework Statement A swimming pool has the dimensions 24 m multiplied by 9.0 m multiplied by 2.5 m. (a) When it is filled with water, what is the force (resulting from the water alone) on the bottom, on the short sides, and on the long sides? Homework Equations F = P*A P =...

1. A giant wheel, 40 meters in diameter, is fitted with a cage and platform on which a man can stand. The wheel rotates at such a speed that when the cage is at the top of the wheel, then the force exerted by the man on the platform is equal to his weight. The speed of the man is: 2. T + mg...

Homework Statement A Saturn V rocket has a mass of 2.75x10^6 Kg and exerts a force of 3.3x10^6N on the gases it expels. determine the initial vertical acceleration of the rocket. 2. The attempt at a solution heres my attempt... F=3.3x10^6N Fg= M=2.75x10^6 Fnet-MA F-Fg=ma F-mg=ma...