Figure skating is a sport in which individuals, pairs, or groups perform on figure skates on ice. It was the first winter sport to be included in the Olympic Games, when contested at the 1908 Olympics in London. The Olympic disciplines are men's singles, ladies' singles, pair skating, and ice dance; the four individual disciplines are also combined into a team event, first included in the Winter Olympics in 2014. The non-Olympic disciplines include synchronized skating, Theater on Ice, and four skating. From intermediate through senior-level competition, skaters generally perform two programs (the short program and the free skate), which, depending on the discipline, may include spins, jumps, moves in the field, lifts, throw jumps, death spirals, and other elements or moves.
The blade of a figure skate has a groove on the bottom creating two distinct edges: inside and outside. Judges prefer that skaters glide on one edge of the blade and not on both at the same time, which is referred to as a "flat edge". Skates used in singles and pair skating have a set of large, jagged teeth called a "toe pick" on the front of each blade. The toe picks are mainly used to help launch the skater into the air for the take-off when performing jumps. Ice dance blades have smaller toe picks than blades used for the other disciplines. During a spin, skaters use the "sweet spot" of the blade, formally called a rocker, which is the roundest portion of the blade, just behind the toe pick and near the middle of the blade.
Figure skaters compete at various levels from beginner up to the Olympic level (senior) at local, regional, sectional, national, and international competitions. The International Skating Union (ISU) regulates international figure skating judging and competitions. These include the Winter Olympics, the World Championships, the World Junior Championships, the European Championships, the Four Continents Championships, the Grand Prix series (senior and junior), and the ISU Challenger Series.
The sport is also associated with show business. Major competitions generally conclude with exhibition galas, in which the top skaters from each discipline perform non-competitive programs. Many skaters, both during and after their competitive careers, also skate in ice shows, which run during the competitive season and the off-season.
I think I broke special relativity…not really but I am clearly over looking something. Imagin a man carrying a pole (like a pole vaulter) running at speed v. The length of the pole = L, so in the frame of the person watching this man run, the length of the pole is observed as L/γ. There is a...
I already solved for part a, setting the sum of the Torques of the arms and deltoid equal to 0 and subbing in values which lead to a tension force of 870N in the deltoid.
For part b, I remembered the law of static equilibrium, so the summation x and y components of all the forces in the system...
Figure:
My attempt at a Solution:
$$\overrightarrow{TFD}=TFD\dfrac{(-0,16\widehat{i}+0,11\widehat{j}-0,08\widehat{k})}{0,21}$$
View from above:
We calculate ##D##:
$$\sigma =90-\arctan \left( \dfrac{0,07}{0,240}\right)=73,74\, \textrm{º}$$
$$d=0,16\cdot \sin (\sigma)=0,1536\, \textrm{m}$$...
Hi. I apologize if this thread is too stupid or if this is the wrong section.
I made a drawing a long time ago:
This should be "random man", and I bet that in his shirt there is something math/physics-related, maybe a formula. Do you have any idea? I don't remember and nothing comes to mind...
After making a graph using Plotly in Python, I'd like to change the data. From the documentation (which is not very clear) it appears this is the code we need:
f1.update_traces( y=[4,3,2,1] )
(where f1 is the figure created previously).
But nothing happens when I run this.
In order to see the...
Hi, All. In searching for images related to the introduction of band theory in solid sate physics I found this one:
I would like to ask you if I am correct in thinking the increase in the number of splittings (in b) is misleading to students.
Thank you all
DaTario
Hello,
Just for fun - I am trying to go through The Feynman’s Lectures: Lecture #26 – Volume 1: The Principle Of Least Time. I am stuck on Figure 26-4 and specifically showing the two angles with the “double arcs” are equal. The angle of reflection BCN’ and XCF.
Maybe I am just that rusty on...
Barge size is 54.864 x 15.5448 x 2.95 m and Barge capacity 1500 ton
Sorry to misunderstand. I am learning. Not to disturb others.
My load is 350 Ton size above shown.
What the draft after load the cargo on the barge?
The barge draft 470mm
Bow side after 5m has slope. I mean front side from the...
t=7s
v=340m/s
v=v0-gt
340=v0-9.8x7
v0=408.6
d=d0+v0t-0.5gt^2
d=0+408.6x7-0.5x0.8x7^2
d=2620.1m
this is what I've done but apparently is incorrect, not sure why or what the proper method is
This post is slightly different from a previous post sent to mathematical forum : this is because I talk about here the MATLAB function "eig" with 2 arguments but this concerns actually the combination between 2 biased tracers in Cosmology context.
I am looking for a common basis of...
I have this function that I need to reverse.
I can't figure out how to reverse it though, I should be able to take the resulting int, put it through a function with the height value and get back distance. Normally, when I get stuck, I just ask wolfram alpha to solve it for me, but that...
Question:- Find the area of the figure given by the cartesian equation below:
$$\frac{(x+y)^2}{16}+\frac{(x-y)^2}{9}=1$$
Solution given:-
Let $x+y= 4\cos{\alpha},x-y=3\sin{\alpha}$ Then $x=\frac{4\cos{\alpha}+3\sin{\alpha}}{2}$ $\Rightarrow dx=\frac{3\cos{\alpha}-4\sin{\alpha}}{2}d\alpha$...
The figure represents a system composed of two ideal fixed pulleys that support three masses A, B, and C of the same mass M, suspended by light and inextensible threads. Massor A is simultaneously suspended by two wires, one connected to massor B (wire 1) and the other to massor C (wire 2). We...
In this example I am thoroughly confused on why Is is divided by sqrt(3). My understanding is that the transformer supplies 3 phase (which is always described in line to line or Y connected). So the current in the winding should be 120[KVA]/230[V] then multiplied by sqrt(3) to convert it to...
Can someone simply screenshot this figure and send to me: Consider Figure 5.4 d) on page 153 of Hecht. As shown, converging rays that are headed toward the point F convert to a plane wave upon hitting the boundary between n2 and n1.
Homework Statement: Ideas for astrophysics EE
Homework Equations: Extended essay
Hi Guys!
I'm trying to figure out a research topic in astrophysics/astronomy for my IB extended essay. I don't really know what to do, do any of you any ideas, maybe even off the top of your heads? It needs to...
Summary: I have trouble to define the y distance in my coordinatesystem
I need to find an expression for the shear stress on the I figure, where the green parabola illustrates the function. I made a cut, where I defined the length from the start of figure I to the cut as z1. The formula for...
Hi
I need help with a problem on 'Nets'. I have attached an image , need help coming up with a 3D figure based on top, side and front views. The closest i could come to was a triangular prism but the front view does not seem to agree with the prism. Please help.
Thanks
Neha
iam not sure of the direction of work , is it positive becouse pulleys change the direction of the force ? or is it negative because of the arrow that indicates the direction of acceleration ??!
I bought a 74hc595 shift register.
The 1st output and 2nd output won't change. They turn on two diodes and none of them will turn off. How do you get the 1st output
To output a zero? I have studied the
Datasheet doesn't help.
I tried making B vector in direction of D vector with a minus sign and after doing so I got the answer C vector - D vector= -A vector. But it's given as incorrect. I don't know why. Please explain how other options are correct.
Hi.
Would it be possible (at least in principle) to use the spacetime perturbance caused by the energy-momentum of a photon (or any other particle) to figure out which way it took in a double slit experiment? Can this question even be answered in today's attempts at quantum gravity?
I am reading the book: "Vector Calculus, Linear Algebra and Differential Forms" (Fourth Edition) by John H Hubbard and Barbara Burke Hubbard.
I am currently focused on Chapter 6: Forms and Vector Calculus ...
I need some help in order to understand some notes by H&H following Figure 6.1.6 ...
Homework Statement
Serway Physics Chapter 2
19. A particle starts from rest and accelerates as shown in Figure P2.19.
Determine (a) the particle's speed at t = 10.0s and at t = 20.0s and
(b) the distance traveled in the first 20.0s
Homework EquationsThe Attempt at a Solution
I am...
I started an electronics program recently and I am a month into it so I am quite new at this. I have a problem involving a potentiometer and I don't understand how to compute the voltages because I don't know what I am supposed to use for my resistance values.
I know that in series the total...
I was reading a different post, https://www.physicsforums.com/threads/differntiating-a-circle.279719/#post-2003287 and was doing great... guys, thanks so much for this forum!
HallsofIvy posted "1: You titled this "differentiation of a circle" which makes no sense. You cannot differentiate a...
Homework Statement
[/B]
So here is my question: I asked you about a solution approach/solution for the following task: Two rail paths cross at an angle of 145 °. With a constant speed of 60 km/h, they just drive along their tracks, and each of them repels steam/smoke flags, which, among other...
Homework Statement
Hello,
This is not a homework help problem but I believe this question belongs here more so than in the other forums.
I would like to (for personal benefit) duplicate / generate the plots in Figure 2.6 of Griffiths Quantum Mechanics book - page 55, 2nd edition.
Homework...
Homework Statement
Figure shows a 50 Hz, high-voltage, transmission line. The relationships between the sending and receiving end voltages and currents are given by the complex ABCD equations:
where 'S' stands for sending-end and 'R' stands for receiving-end
(a) Given the parameter...
Hello,
I want to write on the bars inside the subplots of a seaborn.FacetGrid a number that represents their height on the y-scale. How can I do that?
Suppose the code for the FacetGrid is
g = sns.FacetGrid(df, row = 'feat1', size = 5, aspect = 2)
g = (g.map(sns.countplot, 'feat2', hue =...
what are those 'R' atoms(highlighted in red)?
Also,What is finely divided Nickel(marked in red)?
I will be thankful for help!
Note:I am a High School student and English is my second language!
I was watching a video online about something completely different, but in the background I saw a computer monitor displaying an object similar to this.
Can this be topologically reduced to a simpler shape? Such as a simple one-, two- or three-hole doughnut? Or is it an irreducibly complex...
I seem to remember this Algebra identity being covered in one of my classes years ago, but it has cropped back up in studying the relativistic doppler effect for light.
Can anyone please show me the intermediate steps to show that:
(1+x)/(sqrt(1-x^2) = sqrt((1+x)/(1-x))
or similarly...
Homework Statement
https://imgur.com/a/aVCeU
Homework Equations
(1/Req) = (1/Rv1) +(1/Rv2)
Req = Rv1 + Rv2
The Attempt at a Solution
I'm not sure which formula is the correct one to use.So..
I'm absolutely stuck. I tried downloading a bunch of circuit board simulators, but I couldn't find an...
I needed help figuring out the formula for a sequence with these conditions:
1. The first term is 1.
2. All terms are positive integers.
3. 3 times each term (3*a_n) must be greater than the sum of that term and all the terms before it, but no more than 3 greater.
Operators like ceil() and...
But not for the reason or application you might think...lol
I live in SE Texas, just south of Houston. It is hot as balls here in the summer. (Which accounts for three of our seasons here) My neighborhood is on a "community well" type water system, and the well is in the back of the...
Homework Statement
Two springs which have spring constant of k1 and k2 respectively are vertically hung in a series. Then, a mass m is attached to the end. Find the displacement and the spring constant of this series.
Homework EquationsThe Attempt at a Solution
I got the displacement x1+x2...
Homework Statement
We've got an object/person in the center of a cicrcle that spins around with an angular velocity ω. That same object is moving at a constant speed k with the direction of the radius, that is from the center to the outside of the sphere. That object describes then a spiral...