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How might you use sound waves to smash a glass? What are other examples of resonance in everyday life?

The natural frequency of a glass can be found by tapping it or making it 'sing' (running a wet finger around the top of the glass till it sings a note. If you emit sound waves at this frequency in the direct...
JR
Answered by Josie R. • Physics tutor
2766 Views

Why is the sky blue?

Light from the sun is white. As it passes through the Earth's atmosphere, the different wavelengths of white light (i.e. the visible spectrum of colours) are scattered by gas and dust particles. Colours with...
JR
Answered by Josie R. • Physics tutor
5929 Views

How do you conjugate the present subjunctive mode?

For regular verbs, these conjugations are relatively easy - the way I remember it is that you switch the endings of AR verbs with those of ER/IR verbs in the indicative. e.g. present indicative com er : yo c...
AM
Answered by Ashley M. • Spanish tutor
2670 Views

Solve the equation ((2x+3)/(x-4))-((2x-8)/(2x+1)) = 1 to 2 decimal places.

First, multiply by the denominators making sure to multiply on both sides of the equation and the other fraction. You should start this by multiplying through by one of the denominators and then by the other...
HC
Answered by Harry C. • Maths tutor
4191 Views

What is the definition of structural isomerism and what are the different types?

Structural Isomerism: Molecules with same molecular formula and different structural formula. Different types: Positional, chain, functional group
EA
Answered by Ellie A. • Chemistry tutor
3142 Views