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When going around a roundabout, why do I feel a force pulling me outwards?

The force pulling you outwards is what is called fictional force. Actually, there is a force pulling the car inwards and since Newton's Laws mean that you want to keep moving forwards rather than going aroun...
JC
Answered by Jasmine C. • Physics tutor
8627 Views

Describe the Control of Blood Sugar Concentration in the body under normal physiological conditions (4 Marks)

Blood glucose concentration is monitored and controlled by the pancreas (1 Mark)If blood glucose is too high then the Pancreas produces the hormone Insulin (1 Mark)From beta cells (1 Mark)This results in glu...
TC
Answered by Thomas C. • Biology tutor
2622 Views

Describe how animals and plants are adapted to survive in dry conditions such as deserts:

Plants are adapted to survive dry conditions in the following ways: A decrease in surface area of the leaf, such as that found in the rolled-up leaf/spike in cactuses. This decreases the area from which wate...
AO
Answered by Aya O. • Biology tutor
3468 Views

A ladder of length 5 m is place with the foot 2.2 m from the base of a vertical wall. How high up the wall does the ladder reach?

Drawing a diagram will help to visualise the problem and realise it is based on Pythagoras's theorem: a^2 + b^2 = c^2. We have been given 'c' the hypotenuse (5 m) and one of the shorter sides (2.2 m), which ...
GS
Answered by Gagandeep S. • Maths tutor
5166 Views

How do vaccines protect us from infection and why is it important that lots of people are vaccinated?

Vaccines contain a safe form(weakened or small sample, a dead sample) of a disease causing micro-organism.The white blood cells produce the antibodies to destroy the invading pathogen.The memory cells can th...
SA
Answered by shreyas a. • Biology tutor
2639 Views