Top answers

v^2=u^2+2as, make "a" the subject of the formula.

v 2 =u 2 +2asv 2 -u 2 =2asa=(v 2 -u 2 )/2s as required
ML
Answered by Matthew L. • Maths tutor
18925 Views

Describe the process of speciation

This sort of question would usually be a 5 mark question. Speciation is the process of forming a new species. The first stage is when a population is geographically separated so they can no longer interbreed...
KS
Answered by Katie S. • Biology tutor
6594 Views

Why does potassium react more readily in water than sodium?

Both potassium and sodium are in the same group on the periodic table, but have a different atomic structure. Sodium has three outer electron rings, while potassium has 4. Both atoms only have one electron o...
YG
Answered by Yvonne G. • Chemistry tutor
17219 Views

What is natural selection?

Natural selection is part of Charles Darwin's theory of evolution . It is when a species adapts to changes in the environment , allowing them to survive. If natural selection doesn't favour a species, it wil...
AJ
Answered by Amy J. • Biology tutor
3870 Views

The probability of getting heads on a biased coin is 0.8. You flip the coin twice. What is the probability of getting one each of heads and tails?

Step 1: Calculate probability of getting tails by subtracting 1-0.8 = 0.2.Step 2: Calculate probability of getting heads then tails by multiplying 0.8 0.2 = 0.16.Step 3: Calculate probability of getting tail...
NR
Answered by Nadya R. • Maths tutor
11093 Views