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Solve the equation (3x + 2)/(x-1) + 3 = 4

Rearranging equations to find x. The first thing to do is to look at the 3. To 'get rid' of the 3 from the left we need to minus 3. Remember we must do the same to both sides so we also minus 3 from the righ...
CN
Answered by Clara N. • Maths tutor
3849 Views

Why does the Photoelectric Effect lead to the conclusion that classical physics cannot be all of physics?

The photoelectric effect is the emission of electrons on a charged zinc plate, when UV light is shone on it, but not low energy visible light. This phenomena is caused by the quantisation of light. Classical...
BO
Answered by Benjamin O. • Physics tutor
6738 Views

How many 4 digit numbers are such that the first digit is non-zero and it is overall a multiple of 5?

The idea for this is simply counting the number of possibilities of each digit. Since the number is a multiple of 5, then we must have it finishing with 0 or 5, i.e., we have 2 possibilities for the last dig...
HA
Answered by Henrique A. • Maths tutor
3973 Views

What is the most difficult topic in HL Maths?

It will mainly depend on your own interests, so there is no definite answer. In my opinion, the whole calculus section is probably the most significant part of the course as it will take up a significant par...
AC
Answered by Ambrose C. • Maths tutor
2355 Views

State the effect that increasing the temperature has on the rate of the reaction. Explain this effect in terms of particles and collisions.

This question is about understanding how reactions happen, what it means for something to react and the factors controlling reactions. Here it is important to know that for a reaction to happen particles mus...
JN
Answered by Jack N. • Chemistry tutor
18201 Views