Top answers

Is momentum a vector or a scalar quantity?

Momentum of an object is the product of its mass and velocity (p=m x v). Since mass is a scalar quantity and velocity is a vector quantity, we can derive that momentum must therefore be a vector quantity as ...
MN
Answered by Madeleine N. • Physics tutor
82632 Views

What are the differences between aerobic and anaerobic respiration?

<p>There are two types of respiration that you need to know about - aerobic and anaerobic respiration. The main difference between the two types of respiration depend on whether oxygen is available or ...
MH
Answered by Madeleine H. • Biology tutor
25339 Views

Describe the process of phagocytosis.

Phagocytosis begins when white cells called phagocytes recognise bacteria invading the body (pathogens). The cell membrane of one of these phagocytes then fuses around a single bacterium, engulfing it within...
AN
Answered by Abia N. • Biology tutor
35252 Views

What are the key assumptions of the biological approach in Psychology?

Firstly, the biological approach assumes that human behaviour can be explained in terms of genes, hormones, evolution and the nervous system hence there is a focus on nature rather than nurture. Secondly, tr...
MM
Answered by Miraal M. • Psychology tutor
26164 Views

By completing the square, find the values of x that satisfy x^4 -8x^2 +15 = 0

x^4 -8x^2 +15 = 0, we rewrite the equation in square form as (x^2-4)^2 -16 +15 =0 (x^2 -4)^2 = 1 x^2 -4 = ±1 so x^2 = 4±1, (x^2 = 3 or x^2 = 5) Therefore x = {-√3, √3, -√5, √5)
CS
Answered by Callum S. • Maths tutor
3623 Views