Top answers

A balloon's volume is 0.002m^3 at room temperature (20°C). What volume will the balloon occupy when it is cooled to -5°C? Give your answer to 3 significant figures.

(Charles' Law) V₁/T₁ = V₂/T₂ (Rearrange) V₂ = (V ₁T₂)/T₁ (What are all the values in the equation?) V₁ = 0.002m^3 T₁ = 20°C T₂= -5°C V₂= ?? (Convert all temperature values into Kelvin) T₁ = 20+273 = 293K T₂=...
EW
Answered by Ellen W. • Physics tutor
1941 Views

Explain longshore drift.

The prevailing wind blows over the sea at an angle to the coastline, therefore it will cause the swash to run up the beach at a 45 degree angle, this will carry sediment with it which will be deposited. The ...
HO
Answered by Hattie O. • Geography tutor
2543 Views

What is the difference between 'es' and 'está?'

This is a very common mistake made by Spanish learners. Identifying the times to use these different verbs is essential for a high grade and for accuracy in both written and spoken language. The mistake is m...
RH
Answered by Rebecca H. • Spanish tutor
13319 Views

How can I structure my argument to get full marks in an 8 mark question?

An 8 mark question allows you to talk about two key points. Each point will need an example and then an explanation of the example in relation to the topic in the question. So you could structure your answer...
MW
Answered by Maya W. • History tutor
58142 Views

Escríbele un breve artículo para tu periódico local sobre la importancia de las vacaciones.

No es ningún secreto que los estudiantes de hoy están más estresados que nunca. Un estudio realizado recientemente en el Reino Unido encontró que el 70% de los estudiantes sienten que su trabajo escolar es &...
DC
Answered by Daniel C. • Spanish tutor
2234 Views