cokakola

Last seen: 9 months ago | Active since 2016

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Volume of a sphere given its surface area
You just measured its surface area, that is the input.

9 months ago

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Bounding Circle
The Bounding Circle is the smallest enclosing circle to a given set of points on a plane <https://en.wikipedia.org/wiki/Smallest...

1 year ago

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Lost days
Given two dates in a particular format, calculate the difference between them.

1 year ago

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Yoonir - 01
Find the area of a five-pointed star inscribed in a circle of radius r.

1 year ago

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Don't be Too Greedy!!
Refer to the prev problem <https://www.mathworks.com/matlabcentral/cody/problems/45450-don-t-be-too-greedy> For this time, ca...

1 year ago

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Don't be Too Greedy!
Refer to the prev problem <https://www.mathworks.com/matlabcentral/cody/problems/45416-don-t-be-greedy> A list of assignments...

1 year ago

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It's race time! Write a faster function than the test suite call of unique().
Write a function to get unique elements of a vector faster than unique()! Input will be a vector (of integers or floating point ...

1 year ago

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Wrecked Angles?
It's time for some simple geometry fun to start off the new year. You will be given the perimeter P and the area A of a recta...

1 year ago

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The 17x17 Problem
This problem is sometimes referred to as the <http://bit-player.org/2009/the-17x17-challenge 17x17 challenge>. See also <http://...

1 year ago

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The Hills Are Alive...
After a long day of coding, you decide to get some fresh air and hike up a nearby hill. The hill isn't very tall, but since you...

1 year ago

Solved

Surface Fit z(x,y)
Given three vectors x,y,z. Find four coefficients c = [cxx cxy cyy c00], such that z = cxx*x.^2+cxy*x.*y+cyy*y.^2+c00. For e...

1 year ago

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Converting Decimal to Binary
Given a decimal number that may include a fractional component, convert it into binary representation. The numbers you are given...

1 year ago

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USC Spring 2013 ACM: Walking on Thin Ice
This Challenge is to solve the <http://contest.usc.edu/index.php/Spring13/Home USC Spring 2013 ACM Contest> Problem E, Walking o...

1 year ago

Solved

GJam 2013 Veterans: Ocean View (Small)
This Challenge is derived from <http://code.google.com/codejam/contest/2334486/dashboard#s=p2 GJam 2013 Veterans Ocean View>. Th...

1 year ago

Solved

Juggling
There is a notation system for <http://en.wikipedia.org/wiki/Juggling jugglers> called <http://en.wikipedia.org/wiki/Siteswap si...

1 year ago

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Mechanical Advantage of a Gear Train
Calculate the mechanical advantage of a gear train. The mechanical advantage of a gear couple is given by MA = T_o/T_i where ...

1 year ago

Solved

Calculate compression ratio of engine
Calculate compression ratio of engine given compression volume of cylinder(Vc), piston stroke(s) and valve diameter(d)

1 year ago

Solved

Determine if a four bar mechanism is of Grashof type
A four bar mechanism is composed of four links. if s is the smallest link, l the longest and p,q are the length of the other lin...

1 year ago

Solved

Bernoulli's Equation
Bernoulli's equation states that for an incompressible fluid the following summation is constant across the flow: v^2/2 + g*z + ...

1 year ago

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How Far Can You Throw Something?
As you probably learned in your high school physics class, throwing an object at a 45 degree angle will give you the maximum ran...

1 year ago

Solved

Find the jerk
No, it's not the author of this problem... Jerk is the rate of change in acceleration over time of an object. So, if given t...

1 year ago

Solved

Center of mass
Given a matrix M(m,n), where m is the number of vertices of the geometrical element and n is 2 or 3 (2D-plane figure or 3D-solid...

1 year ago

Solved

Elastic Collision 001: 1-D
Elastic Collision of two particles. <http://en.wikipedia.org/wiki/Elastic_collision wiki Elastic Collision> Solve Conservat...

1 year ago

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Distance of the centroids of the balls
Given *n* balls of radius *r* and the vector *p (nx3)* with all position *(x,y,z)* of the balls, return the symmetric matrix *A ...

1 year ago

Solved

What gear ratio does the cyclist need?
A cyclist (perhaps including our famed Codysolver the cyclist <http://www.mathworks.com/matlabcentral/cody/players/1841757-the...

1 year ago

Solved

Energy of an object
Calculate the total mechanical energy of an object. Total Energy= Potential energy + Kinetic energy P.E.=m*g*h K.E.=1/2...

1 year ago

Solved

jogging?
Imagine x-y coordinate system and you are at the origin and your partner is on the x-axis at some small distance (d) away from y...

1 year ago

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Bouncing disk
A disk is placed in a rectangular room with dimensions a and b in a point with coordinates x0 and y0. The disk is given a startu...

1 year ago

Solved

An Ohm's Law Calculator
*BACKGROUND / MOTIVATION:* Many important observations in math and science can be described by short, but powerful, equations...

1 year ago

Solved

SatCom #2: Gain of a circular 'dish' antenna
Satellite and Space Engineering - Problem #2 This is part of a series of problems looking at topics in satellite and space comm...

1 year ago