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Fotios Tsitsos

I love using Mathematics and Science to explain and understand the world.

Fotios Tsitsos's hourly rate£15per hour
Fotios Tsitsos's total answers21answers
Fotios Tsitsos's hours taught5hours or less

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About

I am a second year undergraduate student at Imperial College London, studying Materials Science and Engineering. I have experience teaching Maths, Chemistry and Physics to High School students.

Education

American Community Schools of Athens logo

American Community Schools of Athens

International Baccalaureate - 41

2015 - 2017

Imperial College London logo

Imperial College London

Materials Science and Engineering - 1st

2017 - Now

Answers

ASKED BY LAUREN

MATHS 💯

180g Of c is mixed with 105g of Z to make an alloy. The density of C is 9g/cm3 . The density of Z is 7g/cm3. What is the density of the alloy?

From a mathematical viewpoint, you just need to work out the volume occupied by each element by dividing the mass by the density i.e: You have 180/9...

ASKED BY JENIFFER

SCIENCE 🔬

How does lightning work?

What we see as a lightning bolt is the sudden discharge of electrical charge that is accumulated in the clouds and the ground as it rains. As water ...

ASKED BY AUDREY

SCIENCE 🔬

In a star if helium fuses to make carbon, what makes the elements in between?

The fusion of elements in stars depends on the size and temperature of the star itself. Initially the star is mainly formed of hydrogen, which fuses...

ASKED BY SARAH

SCIENCE 🔬

Why do astronomers try to find the distance to stars using parallax?

Astronomers use the parallax method because it is one of the most accurate and straightforward ways to measure the distance to stars. Astronomers me...

ASKED BY WENBO

MATHS 💯

Y''-2y'+y=e^x,y(0)=y'(0)=0. Solve y(2)?

The short answer is 2e^2. However to reach this solution you need to work a bit. This is a second order ordinary differential equation, which means ...

ASKED BY MICHEAL

SCIENCE 🔬

Can you rank the four forces that affect the structure of an atom in order from the strongest to the weakest?

The four fundamental interactions are the gravitational, electromagnetic, weak and strong nuclear interactions, although there are some newer modifi...

ASKED BY BENJAMIN

MATHS 💯

Can someone please explain to me how to do these questions ? The coordinates of the maximum point of the graph y = f(x) are (4,3). Give the coordinates of the maximum point of the graph with equation: a) y = f(x), b) y = f(x) - 4, c) y = f(x-2) + 1?

This is a functions transformation question. What you need to know to solve this is how the addition or subtraction of a number, either within or ou...

ASKED BY HOUSTON

MATHS 💯

Consider A(3,60),B(8,150) and O(0,0). Find the area of triangle AOB?

The easiest way to start solving a question like that is to make a plot of the points. It need not be extremely accurate but it will give you an ide...

ASKED BY SHAHD

SCIENCE 🔬

Why does potential energy mean?

Potential energy is the energy stored in a body due to its position or deformation. It is called “potential” energy simply because it has the potent...

ASKED BY MAX

SCIENCE 🔬

Do astronauts age while traveling in space?

Yes they do. There is a common belief that astronauts do not age in space, or they age much more slowly than people on Earth, and this is true becau...

ASKED BY LAU

MATHS 💯

What is the greatest value of 3 cos^2Θ+2?

The maximum value of this expression is obtained when the cos^2 (θ) function takes its maximum value, which is 1. The cos^2 (θ) function is maximum ...

ASKED BY AMBAR

MATHS 💯

Ruth’sRags has just increased all of its prices. Last week a shirt cost £40. This week the price of the same shirt is £64. Find the new price as a percentage of the old price. I need help with this question. Thanks?

To find the new price as a percentage of the old price, you need to divide the new price by the old price, i.e. 64/40. This gives 1.6, which if you ...

ASKED BY YEEUN

MATHS 💯

P is inversely proportional to the square of Q(P,Q > 0). When P=3, Q=4. Find an equation for P in terms of Q and find the exact value of Q when P=8?

An inverse proportionality means that the two variables are related in a manner like: P=b/Q^2 or P(Q^2)=b where b is a constant of proportionality. ...

ASKED BY SARAH

SCIENCE 🔬

What is the life cycle of a star?

The life of a star depends heavily on the size (the mass) of the star. All stars are initially formed by clouds of dust, that come together by force...

ASKED BY AMBAR

MATHS 💯

I don’t understand algebra. Help me please. I get stuck and confused at stuff?

Hello Ambar, Algebra, and maths in general, can be quite challenging but there are tricks to get through the difficulties. What works in every case ...

ASKED BY HARLEY

MATHS 💯

How do you find the area of a triangle with surds as lengths?

You find the area as usual, by using one of the formulas you already know. The only trick here is to use the lengths in square root format and not a...

ASKED BY LAUREN

MATHS 💯

How do I find n? There is a rectangle and l=125^2n and w=25^n-1 and there area in 625cm^2. I know n=3/4 and I know you have to multiply l and w. What steps are required after that?

The formula for the area is l•w so your data gives you the exponential equation: 125^(2n) • 25^(n-1) = 625. Notice now that every term in the equati...

ASKED BY EMMA

MATHS 💯

Express 24 as a product of prime factors?

24=6*4=2*3*4=2^3 *3

ASKED BY JENIFFER

SCIENCE 🔬

What is the difference between a type I and type II supernovas?

What we usually think when we hear the word supernova is a massive explosion of a star that can be seen from a large distance because of its huge sc...

ASKED BY NADAV

MATHS 💯

What are integrals?

Integration, or anti-differentiation, is one of the two major operations in calculus, the opposite of differentiation. An integral is the mathematic...

ASKED BY KANWAL

CHEMISTRY ⚛️

How do I balance equations?

The process of balancing chemical equations is done so that the law of conservation of mass is obeyed. What you need to do when balancing equations ...

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