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.
The drawing shows a human figure approximately in a sitting position. For the purposes of this problem, there are three parts to the figure, and the center of mass of each one is shown in the drawing. These parts are: (1) the torso, neck, and head (total mass = 41.5 kg) with a center of mass...
Ok, let me see if I can explain this well enough. There's a horizontal circular rod governing the motion of a collar having mass .75kg. The coefficient of kinetic friction is .3 and the collar is given an initial speed of 4 m/s starting at theta=0. I need to determine the arclength the collar...
A small ball bearing having a mass of 50.0g was dropped in a graduated cylinder filled with a thick but clear motor oil. At the point shown by the diagram, this ball bearing was moving at a sonstance velocity of 4.5cm/s.Use This information to calulate the frictional force of the oil on the ball...
Hello everyone.
I've been looking at examples and I can't seem to see what they are doing.
For example, the book has:
Suppose that d1, d2, d3 ... is a sequence defined as follows:
d1 = 9/10, d2 = 10/11.
dk = dk-1 * dk-2 for all inegers k >= 3.
Prove that dn =< 1 for all...
WHAT DID EACH OF THESE WOMAN BUY IN THE FOLLOWING SCENARIO AND HOW DID YOU ARRIVE AT YOUR ANSWER?
Ms. Adams, Ms. Baker, Ms. Catt, Ms. Dodge, Ms. Ennis, and Ms. Fisk all went shopping one morning at the Emporium, Each woman went directly to the floor carrying the article that she wanted to...
I bet you can't figure this one out!
Ive been working on this problem for extra credit in one of my classes all morning and its driving me nuts. The problem is "you are given 12 pennies, they all weight exactly the same except one, your a given a balance scale and need to figure out if the...
The problem is this
A cable television firm presently serves 5000 households and charrges 20 dollars per month. A marketing survey indicates that each decrease of 1 dollar in the monthly charge will result in 500 new customers. Let R(x) denote the total monthly revenue when the monthly...
This chapter is working with negations of Quantified statements.
True or False. All the occurrrences of the letter u in the title of this book are lower case. Justify your answer.
I said false, because they arn't being clear when they say "this" If even 1 book doesn't have a lowercase...
Harry the painter swings year after year from his bosun's chair. His weight is 500 N and the rope, unknown to him, has a breaking point of 300 N. Why doesn't the rope break when he is supported as shown to the left below? One day Harry is painting near a flagpole, and, for a change, he ties the...
Um hello, I am new to this forum and still don't understand everything very well but i need some help. I've been doing revision over the new topic we've been learning in high school physics about electrical forces and fields and we've been spending most of the time doing questions about columbs...
in a rutherford gold experiment, alpha particles with sharge +2e and a kinetic energy of 7.7 Mev were beamed at gold foil. the nuclius of a gold atom contains 79 protons, giving it a charge of +79e. What is the closest distance that an alpha particle can get to a gold nucleus when it approaches...
How did Newton arrive at the conclusion that the force of gravity is directly proportional to the product of the masses of two objects, and inversely proportional to the square of their distance?
I know that he was the first to realize it's gravity that keeps the planets in orbit, but what...
Hello,
I am having trouble with this integral, I don't know how to solve it.
integral(x * cos(x))dx
I tried it in the calculator and it gave me the integral back, and I don't know what method of integration to use to figure it out.
Well if anyone has a solution that would be great, thanks.
Ok, I was trying to think of a first problem/question to pose to everyone for my first pose, so here it goes...
(there's a lot of questions and topics already posted, so someone may have already asked this)
Situation:
One Antimatter Proton and One normal matter proton are on a collision...
I messed up in the lab a week or so ago, and was unable to do the lab properly. There was no time to restart so I am missing a crucial piece of data.
I need to know the mass of my calorimeter + the mass of a solution. I know the mass of the calorimeter, and I know the mass of the first...
what is the proper method for finding the average of an integral? For example, the question I'm trying to answer is this:
"Find the average value of the function f(x) = 4 - x² over the interval [-2, 2]."
Now the answer is suppost to be 8/3. But I keep getting an answer of -11/3 no...
i am having trouble with this question" if you clap your hands the echo from a distant wall 0.20s later, how far away is the wall?" how do you do this without the speed given to substitute into the speed= distance/time equation?
well i had a test today and one of the questions was this.
:A particle particle mass of 25g rolls up and inclined palne of 20 degree with a Velocity intial of 3.0m/s, there is a frictional force of .4 and at point x2 the velocity is 1.0m/s
What is the acceleration due to friction?
I...
Here is the problem: "A passenger in a convertible throws a ball up into the air. The car is going 35.0 m/s. The upward velocity of the ball is 8.00 m/s. Give the equations which specify the ball position at any given time with respect to the passenger (prime values) and respect to an observer...
Can't figure out this seperable diffEQ! :(
Hello everyone 'ive been trying to figure out this easy looking Differential Equation and yet its wrong! weee!
Here is the problem:
http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/58/6217226076d5fd259f53ad1e3ed4071.png
has an implicit...
I have this trig identity problem i need to solve
cos2x=cosx
I have to find all the values of x, and i know the answer is x=0°+120°, but i can figure ou how. I've tried it over and over and my answer turns out to x=0°=180°. Please help, thank you.:rolleyes:
I maintain a blog where I write about physics for a general audience, and I wanted to let everyone know about my latest entry, which is on the physics of figure skating. With the Opening Ceremonies of the Winter Olympics only a week away, I thought it might be fun to collect links related to...
An object is thrown vertically upward such that it has a speed of 21 m/s when it reaches two thirds of its maximum height above the launch point. Determine this maximum height.
I can't figure what to do since initial velocity isn't given and I don't see a way to solve for it.
for r = 2:.1:10
h=(500/(pi*r^2))-(2*r); %Height for given r assuming max volume of 500m^3
a=2*pi*r*h; %Surface area for cylindrical part
b=2*pi*r^2; %Surface area for hemispherical top
t=a*300+b*400; %Total cost using values of surface area...
Hi, I have a question regarding significant figure.
One rule when multiplying measured quantity is that the final answer needs to use the least number of significant digits provided in the question.
Now.. if v = 17 m /s and t= 0.8 s. What is d?
d = v * t
d = 17 m / s * 0.8 s
d = 13.6...
Hello everyone I'm stuck, i got right to the end of this intial value problem and it doens't seem to want to work.
Solve the separable differential equation for u
{du}/{dt} = e^{3 u + 10 t}.
Use the following initial condition: u(0) = 6.
u = ?
I might have screwed up here:
du =...
Hey, I was trying doing some calculations and ran across a question I just can’t figure out. Hopefully I explain this well.
I am trying to find the Z component of velocity of an object on earth’s surface after a given time. For example a rock lies on the ground with a tangential velocity of...
let's say a 180 lbs person needs to move a 2000 lbs object 50 feet. that would take 100,000 ft/lbs. how do you apply that in terms of how much effort it would take from a 180lbs man? divide by 180 and get 555.5? how do you determine the amount of force required to get this object rolling? this...
Please help. I am desperateA string with both ends held fixed in vibrating in its third harmonic. The waves have a speed of 186m/s and a frequency of 250Hz. the amplitude of the standing wave at an antinode is 0.450cm.
A. Calculate the amplitude at point on the string a distance of 15.0 cm...
Ok I need me some super help. I have a term paper due next monday and things have just been piling on me like there's no tomorrow so I am barely getting a topic as we speak :cry: :cry: :cry: . So I need some suggestions here. I need an important figure to do a report on that was famous or...
I'm a HS senior, and have never covered differential equations outside a CalculusII curriculum. :frown: This is not homework, rather only a part (just one part!) of an interesting problem I posed myself (for myself) one day:
How would I solve for y(x) from :shy::
\frac{{dy}}{{dy}} =...
Im doing a practice test for a asmaytic(not sure how its spelled) and i have the answer but am just unsure of how i was supposed to figure it out. Alright, here's the problem.
if "f" is a quadriatic function with f(0)=0, f(1)=2, and f(2)=3, then f(3)=?
a.4 b.3 c.13/4 E.4
the answer is...
A friend of mine asked me this short teaser and I can't seem to figure it out:
At opposite ends are my mouth and my head
I run for miles without leaving my bed
My friend says to think outside the box on this one.
Hello everyone, i have no idea why i can't grasp this simple concept...
i have:
A =
1 4 9
0 1 9
0 0 1
I have to find A^-1, A inverse.
So I found the determinant along row 3,
1*det(B) = 1;
B =
1 4
0 1
det(B) = (1)(1) - (4)(0) = 1;
so i take 1/det * A now wouldn't that just...
figure this one out?
why does saturns moon iaeptus have a big wall that bisects it(while it looks like a big ying/yang)?
just curious how that is even geologically possible at all?
An angle is given to one significant figure as 7 degrees, meaning that's its value is between 6.5 degrees and 7.5 degrees. Find the corresponding range of possible values of the cosine of the angle. Is this a case in which there are more significant figures in the result than in the input data...
I am so close to figuring this problem out, but I just can't quite get it. Here's the problem:
At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 2.80 m/s^2. At the same instant a truck, traveling with a...
Measurements show that a honeybee in active flight can acquire an electrostatic charge as great as 93.0 pC.
Q1 is How many electrons must be transferred to produce this charge?
my proposed ans using the formula f=k e
after rearranging equation e= 93pC * ./8.99 *10^9 = ?(the ans)
but i do...
as shown: in the picture, look at figure d) (attachment) don't worry about figure a) --- given:
720 gm rock
each string has a tension of 29 N
the rock is held by two of the 45 cm strings with ends 56 cm apart and whirled in a circle between them. Neglect gravity.
What is the...
WASHINGTON (Reuters) - Robert Earl, who destroyed national security documents during the 1980s Iran-Contra scandal, is working as chief of staff to acting Deputy Defense Secretary Gordon England, the Pentagon said on Monday.
Earl destroyed and stole national security documents while working...
Hello All
I have this question that I have to find the exact value of sin 5Pi/12. How do I figure out what this is in degrees? Or how do I break this down so I can use addition or subtraction foumulas?
Thanks
I've been working on this problem for near three days now, with two other people. We cannot completely figure it out :devil:
(a) In an office, at various times during the day, the boss gives the secretary a letter to type, each time putting the letter on top of the pile in the...
That L shaped thing reminded me of a puzzle. How do you draw a line that bisects an L-shaped plane figure? In this case, bisect means cut into two pieces of the same area.
I am "scared" (to put it mildly) of these problems, which I need to review before my final tomorrow. Just to let all of you know, this is not homework. There are 25 or so problems, and I only understand around 10 of them. :frown:
Help me! I need an A on the final to get a B in the class. :cry...
2,5,8,11,13,15,30,34,40,46,52,56,60,63
This was a popular one when I was younger, but I haven't heard it lately. What comes next in the sequence? This is way a trick question. Only a small percentage of people have even a chance of figuring it out.
My art teacher gave an assignment to us to find 2 examples of some of Jackson Pollock's Figure Drawing, ie art with reconizable human forms in it be it painting, drawing, what have you.
Most Jackson Pollock is Know for his abstract stuff, making it very hard for me to find anything that even...