# Nikolaos Nikolaou

Physics , Wholesale auctions , Crypto Mining , Renewable Energy

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**Content Feed**

Solved

Calculating Student Grades

The matrix grades contains raw grades for 7 students who took your course. Each row represents a different student. The first 7 ...

1 hour ago

Solved

Calculate the mean of each half of a matrix

Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elem...

2 hours ago

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Create an arrow matrix

An arrow matrix is a square matrix that contains ones on the diagonal, the last column, and last row. ...

2 hours ago

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Simpson's Paradox - Calculate correlation coefficients for groups of data

Simpson's Paradox is a statistical phenomenon where groups of data can have a characteristic while the whole data set together h...

2 hours ago

Solved

Dog Statistics

The vectors ht and wt contains the heights and weights of 20 golden retrievers. In some cases, it was not possible to make both ...

6 hours ago

Solved

Find the minimum of the column-maximums of a matrix

Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...

6 hours ago

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Définir une fonction creneau

Definr une fonction "creneau" qui prend en entrée un vecteur et renvoie la valeur 1 pour chaque élément positif du vecteur et...

6 days ago

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Caracteres Unicos

Dada uma string, verifique se a string é composta de caracteres únicos, ou seja, nenhuma letra se repete. Retorne true ou false;...

6 days ago

Solved

Basic Mathematics 3

It was announced during a Robotics Competition kick off that two of the trickiest scoring objects are: soup cans, and beach ball...

6 days ago

Solved

Function substitution (1)

Evaluate the function for the given values of the variables N and t

22 days ago

Solved

Array Concatenation (2)

Given two matrices, a and b, concatenate the two matrices vertically, i.e., the number of rows of the result should be equal to ...

22 days ago

Solved

Array Concatenation (1)

Given two matrices, a and b, concatenate the two matrices horizontally, i.e., the number of columns of the result should be equa...

22 days ago

Solved

Find the remainder - 02

Given an array of integers, find the remainder when the summation of all the elements is divided by N

23 days ago

Solved

Find the force required to support a lever

Students are designing a robot that will lift a block to the equilibrium position for transport to the scoring area. They have d...

23 days ago

Solved

Coefficient of Kinetic friction

A robot exerts a F1 lb. force horizontally on a W lb. crate across a concrete floor at a constant speed. What is the coefficien...

24 days ago

Solved

Calculate the acceleration of a crate

What is the acceleration of a crate if two robots apply F1 N and F2 N of force respectively and a frictional force of FR N acts ...

24 days ago

Solved

Coefficient of Sliding Friction

A weight of W1 N rests on a horizontal plane. The plane is gradually inclined until at an angle θ = Ao with the horizontal, the ...

24 days ago

Solved

Coefficient of Static friction

The coefficient of static friction between two surfaces is u. What force must be used to move a W lb. crate on a horizontal sur...

24 days ago

Solved

Linear Motion 1

An object travels N feet in the first second of travel, N feet again during the second second of travel and N feet again during ...

24 days ago

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Linear Motion 2

During testing in the desert, a remotely operated vehicle travels D kilometers over rough terrain. The testing takes place over...

24 days ago

Solved

Linear Motion 3

Suppose a robot is moving in a straight line and steadily increases its speed. It moves from v1 ft/s to v1+2 ft/s in the first ...

24 days ago

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Linear Motion 4

A robot accelerates at a rate of A ft/s2. Assuming the robot starts from rest how much time is required to reach an object loca...

24 days ago

Solved

Linear Motion 6

An experimental vehicle traveling at v1 m/s is brought to a full stop in t seconds. How far does it travel before stopping? Roun...

24 days ago

Solved

Linear Motion 7

A robot has a maximum rate of acceleration of a m/s2. If the robot starts from rest and reaches a velocity of v2 m/s. How far ha...

24 days ago

Solved

Unique - Very Very Large Numbers

Given a vector column, with some very large numbers, create the ascending sort and unique vector. *Input:* A (column vector)...

1 month ago

Solved

Magical Land

Mother Earth has gifted humanity a magical land to help all life on earth, in the shape of a n-sided regular polygon. You, bein...

1 month ago

Solved

Minimum number of children to distribute unequal cookie portions

A cruel parent wants to distribute N cookies such that it is impossible for every child to receive the same number of cookies. W...

1 month ago

Solved

List the semiprimes

A semiprime number—or a 2-almost prime—is the product of two prime numbers. The numbers and are semiprimes, but and are not....

2 months ago