Top answers

What is a key difference between plants and animals?

The following are all good answers to this question: Animals are heterotrophic whereas plants are autotrophic Plants can photosynthesise but animals cannot Plants are sessile (do not move) whereas most anima...
GR
Answered by George R. • Biology tutor
4962 Views

What is the difference between 'y' and 'en'?

The simplest way to think of these prepositions is to think that 'y' refers to 'à' and 'en' refers to 'de'. Therefore if you want to say 'Je vais à Paris' you would then say 'J'y vais'. If you want to use 'e...
AW
Answered by Alexander W. • French tutor
7662 Views

"Los jóvenes pasan demasiado tiempo en las redes sociales." Estás de acuerdo? Explica tus razones.

El mundo ha cambiado muchísimo en los últimos diez años. Las redes sociales casi no existían hace diez años y han tenido un impacto profundo en nuestro estilo de vida. Ahora hablamos más en internet que cara...
HB
Answered by Harry B. • Spanish tutor
5011 Views

Why doesn't the magnetic force change the velocity of a particle?

Well actually, it does. Remember that the velocity is a vector and so is the force. Since F=ma, the acceleration due to a given force points in the same direction as the force itself. The magnetic force is p...
AS
Answered by Ana S. • Physics tutor
4218 Views

Solve the simultaneous equations x^2 + y^2 = 9 and x+ y = 2. Give your answer to 2.d.p

Label your two equations 1 and 2 respectively. Make x the subject of the second equation, so x=2-y. Substitute x=2-y into x^2+y^2=9, to give (2-y)^2+y^2=9. Expand the brackets using FOIL to give 4-4y+y^2+y^2...
GS
Answered by Georgia S. • Maths tutor
33255 Views