Röd (Swedish for Red) is the eighth studio album by Swedish alternative rock band Kent. It was released as digital download exclusively through the band's website on 5 November 2009 and physically on 6 November 2009. The first single from the album, "Töntarna", was released as digital download on 5 October 2009.
Röd is available in a standard edition and a deluxe edition box. The deluxe edition box version features the 11-track CD, a USB flash drive with high quality MP3 files as well as AIFF files, three 10" records which between them contain the whole album, and a 118-page book containing lyrics, abstract pictures and photographs. Due to distribution difficulties the deluxe edition was delayed until 11 November 2009.
Homework Statement
https://www.physicsforums.com/attachments/207518[/B]
https://www.physicsforums.com/attachments/207517
https://www.physicsforums.com/attachments/207519
Homework EquationsThe Attempt at a Solution
Let me assume that initially the spring is at its natural length.
The normal...
I understand that there are fuel rods, water control rods. I also understand that fuel rods are metal tubes filled with special U235 pellets. Finally, I understand that water slows the neutrons down enough to collide.
How do the neutrons and U235 nuclei get out of the metal encased fuel rod...
Steel has a "Poisson ratio" μ of 0.29 (in my book of problems at least). Am I understanding the meaning of this ratio correctly: if a steel cylinder is stretched along its symmetry axis by a factor p (something like 1.01 or 0.99) then the radius will change by a factor 1-μ(p-1)?
[So then the...
Homework Statement
[/B]
http://imgur.com/a/Ssolz
Homework Equations
[/B]
Elastic Collision so $$ mgh = \frac{1}{2}mv_i^2 = \frac{1}{2}mv_f^2 + \frac{1}{2}I\omega^2 $$
$$ F=ma $$
The Attempt at a Solution
[/B]
So the problem is similar to this one which allows me to work out the normal force...
Homework Statement
A line of charge with a uniform density of 34.2 nC/m lies along the line y = -14.9 cm, between the points with coordinates x = 0 and x = 42.8 cm. Calculate the electric field it creates at the origin, entering first the x component then the y component
Homework EquationsThe...
Homework Statement
The problem: The mass the m is placed on the rod with the bushing remaining stationary. The end of the rod deflects 2 cm. The bushing is then given a vertical motion y(t) = 0.4 sin (20t) cm. Determine the magnitude of the motion of the mass m (either relative to the bushing...
Is there a formula to calculate the radius that a rod of a given radius can be bent around while staying in the elastic range?
For example, if I had a rod that was 1/4" in diameter and made of HDPE (which I think has a modulus of elasticity of 0.8 GPa), how would I calculate the minimum radius...
Is there a formula to calculate the radius that a rod of a given radius can be bent around while staying in the elastic range?
For example, if I had a rod that was 1/4" in diameter and made of HDPE (which I think has a modulus of elasticity of 0.8 GPa), how would I calculate the minimum radius...
Homework Statement
A cart has two cylindrical wheels connected by a weightless horizontal rod using weightless spokes and friction- less axis as shown in the figure. Each of the wheels is made of a homogeneous disc of radius R, and has a cylidrical hole of radius R/2 drilled coaxially at the...
The moment of inertia of a rod with consistent density rotating about its end is M(L^2)/3. However, if you treat the rod as a point mass and try to calculate this using mr^2, you get M(L/2)^2=M(L^2)/4. Why doesn't this work?
I'm trying to build a fanless computer case for a small electronic device. I'm trying to figure out what type of heat-sink material I should use. I have a solid copper rod about 3cm in length with a radius of .05cm.
I've determined and calculated the density, specific heat, thermal...
Homework Statement
An Aluminium rod has a diameter of 40mm. and is 750mm long. If the temperature difference between the ends of the rod is 100C .
Take the thermal conductivity of Aluminium to be 235 Wm-1K-1
Homework Equations
k * A * ΔT / L
The Attempt at a Solution
235 * 0.097 m * 100 /...
When we have solid rod instead of spring I can solve this problem in Microsoft Excel either with Euler´s method or Runge Kutta method, but that spring makes this problem hard for me.
Homework Statement
Two thin glass rods are placed side by side 4.70 cm apart as shown in the diagram below. They are each 11.3 cm long and are uniformly charged to +10.4 nC .
Answer the questions below regarding the electric field along a line which is drawn through the middle of the two glass...
Homework Statement
(Taken from Serway and Jewett Chapter 23, Q44, 9th Edition)
A thin rod of length ## l ## and uniform charge per unit length ##λ## lies along the x-axis as shown in the image attached.
(a) Show that the electric field at P, a distance d from the rod along its perpendicular...
Homework Statement
Homework Equations
0=viscous forces
0=in-out+sum of forces(0)
2*pi*r*L*τrz evaluated at r-2*pi*r*L*τrz evaluated at r+ΔR (eq1)
Dividing by volume and taking limit as δr->0 in eq1 I get :
(δτrz)/(δr) =0
My question is, how did they in solution got
(rδτrz)/(δr) =0, how do...
Homework Statement
The figure shows an overhead view of a 2.50-kg plastic rod of length 1.20 m on a table. One end of the rod is attached to the table, and the rod is free to pivot about this point without friction. A disk of mass 39.0 g slides toward the opposite end of the rod with an initial...
Homework Statement
A uniform rod (mass 'm', length 'l') held horizontally above the ground. It is released from its supports and struck vertically upwards at one end. With what impulse should the rod be struck if it is to return to exactly its starting position and orientation?
Homework...
1. Homework Statement
A rod (m=6kg, L=3m) at rest on ice (μ=0) is struck by a piece of clay (m=1kg, V=5m/s). The clay sticks.
1) What is the Velocity of the center of mass after the collision?
2) What is the Angular Velocity of the rod following the collision?
If the clay did not stick but...
Homework Statement
B = 0.02T
L = 40 cm
w = 10 rad/s
a: Electromotive force between O and C = ?
b: If electromotive force is the same - so what is the velocity?
I found 2 ways of solution. See "3. The Attempt at a Solution "Homework Equations
φ = BA
ε = -dφ(t)/dt
The Attempt at a Solution
So...
Harvard University has an interesting article on a rod whose end that falls faster than gravity around a pivot.
http://sciencedemonstrations.fas.harvard.edu/presentations/falling-faster-g
How did they derive this formula?
Where R is length of rod/2, or the centre of mass.
Why did they use...
Hi! I am new to the forums and this is my first question.
I am investigating the properties of this type of chain.
In order to understand it better, I need to know the physics behind a falling angled rod.
I understand that the other end speeds up to conserve momentum, but I do not understand...
Homework Statement
Theres a cylinder rod inner radius a outer raidus b.we want to find electric field between a and b,like point r (or radius r) a<r<b.
Homework Equations
Gauss Law
The Attempt at a Solution
[/B]I am trying to find Q enclosed but something make me confused.I am...
Homework Statement
Theres a rod and has ##a## length ##L## and we want to calculaate the electric field far from rod like ##L<<a##
Homework EquationsThe Attempt at a Solution
I found the equation for a normal case and it was ##\frac{1}{4\pi...
Homework Statement
The uniform 5 m-long round wooden rod (ρ = 800 kg/m3 ) is tied to the bottom by a string with length 1 m. Determine the inclination angle θ if the water level is 3.5 m. What if the water level is 7m?
Homework Equations
Fb = ρgV
The Attempt at a Solution
So I'm really...
Homework Statement
Consider one rod of length L which is spun at its center perpendicular to its length; it will have a certain moment of inertia. Now, if the same rod is folded in the middle creating a certain angle and still spun at its center, what happens to its moment of inertia?
Homework...
Homework Statement
Find the total tension acting on a rod rotating about its end with an angular velocity of w as a function of its length x(length)
Homework Equations
F = ma[/B]
The Attempt at a Solution
Let the function be T(x) where x is the length of the rod.
Considering an interval...
Hi.
I've been searching for some description of the following. Something that will explain it and perhaps even some maths about it.
Take a rod or a stick and tie a string around its middle.
Hang it so the string is unwound, still.
Start turning the rod so the string twists around.
Keep...
Hello again everyone sorry it’s been a while since last post or question, been working hard and had my nose to the grind stone, face stuck in many books along with heaps upon heaps of magnetic theory and EE lectures muhahahahaha.
Ok to the question, I have been having some trouble finding a...
Hello.
Say you have a uniform rod in free-fall. Would it rotate?
Suppose you compute the rotation around the CM. I computed that the lever arm is the same on either side, regardless of the angle at which the rod falls, so there can't be any rotation. So if I just dropped a 30º to the horizontal...
Homework Statement
The 3.0 kg rod has a length of 80 cm. The 4.0 kg rectangle attached to the rod has negligible dimensions. The entire object rotates counterclockwise about the bottom of the rod. Determine the angular speed of the apparatus at the instant the rod is horizontal...
Homework Statement
A thin semicircular rod is broken into two halves. The top half has a total charge +Q uniformly distributed along it, and the bottom half has a total charge -Q uniformly distributed along it. A negative test charge is placed at points A, B, and C.
*Image attached*
Consider...
Homework Statement
A thin semicircular rod has a total charge +Q uniformly distributed along it. A negative point charge -Q is placed as shown. (Point C is equidistant from -Q and from all points on the rod.)
*Image Attached*
Let Ep and Er represent the electric fields at point C due to the...
Hello.
Can anyone help me confirm the following from the Feynman tips on physics:
The above diagram shows two rods, with a weight attached (the square). Each rod has a pivot attached, though the pivot on the left is fixed and cannot roll. The weight is 2 kg, and the rod is 0.5 m long. The...
<Moderator note: Thread moved from Classical Physics, hence no homework template>
Hello.
Can anyone help me confirm the following from the Feynman tips on physics:
The above diagram shows two rods, with a weight attached (the square). Each rod has a pivot attached, though the pivot on the left...
I'm trying to solve this problem, however I'm unsure if my reasoning is correct - I do agree with the answer, but something seems wrong to me in my reasoning.
1. Homework Statement
A rod is on a frictionless surface, and is defined by the length L and mass M. It is hit on one end by a piece...
Homework Statement
There is a cyllinder with radius 0.5 m fixed on the wall. We put a 6 metres long thin rod with mass 0.3 kg on it, which does not slip. I would like to calculate the oscillating time. It is a part of a clock, so the oscillating time is probably 1 or 2 seconds, but I got...
Homework Statement : A uniform rod of weight W is free to rotate about a hinge at one end. The hinge is fixed to a wall. If the rod is released from a horizontal position, what force will it exert on the hinge just after being released?
a)W
b)W/2
c)W/3
d)W/4
choose the correct option[/B]2.The...
Homework Statement
Rod of length b and mass m topples from vertical position at theta = 0. Calculate the reaction force f as a function of theta. What is the minimal and maximal values of f for theta between 0 and pi
Homework Equations
Third law?[/B]The Attempt at a Solution
I never really...
Hey, folks! So upon studying for my Physics final tomorrow, I came across this question on the practice exam, which I know the answer is D from the solution key. However, I'm not sure how to get that for the answer.
1. Homework Statement
Homework Equations
τ = rA × Fnet
LA = Ltrans, A + Lrot...
A uniform rod rests on supports at its ends. The right support is quickly removed.
The atom on the right end will accelerate faster than ##g## at ##1.5g##. How is this possible forces-wise? The only forces acting on the atom is its own weight and the interatomic forces of attraction, which...
1. Homework Statement :
A rod of length l is vertically standing on a friction less surface.
It is slightly disturbed from this position. Let w(omega) and alpha be the angular speed and angular acceleration of the rod, when it turns through an angle theta, then find the value of acceleration...
Homework Statement
A vertical rod is rotating about its longitudinal axis at a constant angular velocity Ω. It is allowed to swing freely from the endpoint A. The angle between the rod and the longitudinal axis of the system is denoted by θ. Point A is located on the highest endpoint of the...
Homework Statement
Hello,
I am looking to determine the moment of inertia for the cantilever beam pictured below. I want I to be a function of L1 and T1.
Known variables: L, D, P, t
Dependent variables: T2, L2
Design variables: T1, L1
Homework Equations
L2 = L - L1
T2 = T1 - t
Standard...
Homework Statement
Consider a very thin rod lying on the z axis from z = −L/2 to z = L/2. It carries a uniform charge density λ. Show that away from the rod, at the point r (r >>L), the potential can be written as V (r, θ) = (2Lλ/4πε0)(1/L)[ 1 + 1/3(L/2r)2P2(cos θ) + 1/3(L/2r)4 P4(cos θ) + · ·...
Homework Statement
[/B]
The diagram shows a thin rod of uniform mass distribution pivoted about one end by a pin passing through that point. The mass of the rod is 0.380 kg and its length is 2.50 m. When the rod is released from its horizontal position, it swings down to the vertical position...
Homework Statement
A thin uniform rod of length l and mass m is constrained to rotate with constant angular velocity omega about an axis passing through the center O of the rod and making an angle alpha with the rod.
a) Show the the angular momentum L about O is perpendicular to the rod and is...
I am trying to calculate the vector magnetic potential for a rod of length L extending along the Z-axis. I was asked to find the magnetic potential at a point P which is a distance r from the center of the rod in the XY plane.
I know the formula I have to use is the vector Poisson's equation A...
Homework Statement
We had this elementary experiment in class. An aluminium rod is fixed at one end and at the other end you have a disk. You hand increasingly heavy weights on the disk and measure how much the rod shears (twists). We were asked to make a graph of the shear torque vs. angle of...