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A ball mass 2kg rests on a slope of angle 60 degrees. If it is stationary, calculate the coefficient of static friction

Because the ball is stationary, the sum of the forces acting on it must be equal to 0. We can split the ball's weight into two components: perpendicular and parallel to the slope.W(para)=2gsin60W(perp)=2gcos...
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Answered by Milo E. • Physics tutor
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Describe how animals survive adverse weather conditions

One method of doing this is dormancy. Some animals spend a period of their life cycle dormant in order to lower their metabolic expenditure in conditions which would otherwise require high energy to survive....
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Answered by Jenni M. • Biology tutor
2646 Views

What is the difference between ser and estar?

'Ser' and 'estar' both mean "to be" but they have different meanings for different contexts. The most simple and general way to describe most uses is that 'ser' is used for jobs/occupations and lon...
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Answered by Hena R. • Spanish tutor
2193 Views

Resistance to antibiotics is increasing. How can we help prevent antibiotic resistance developing? (2 marks)

1 mark up to a total of 2 from: Doctors should not over prescribe antibiotics, e.g. for viral illness such as the common cold. Patients should ensure they complete their full antibiotic prescription, even if...
HG
Answered by Harry G. • Biology tutor
2769 Views

How to structure exam question: ‘Trotsky was just as significant as Lenin to the success of the Bolsheviks in the period 1903-1924.’ Assess the validity of this view.

Introduction: Pick one side - yes or no. Mention your arguments and make it extremely clear which one supports your argument the most. Paragraph 1: Lenin as the figurehead of the Bolsheviks --> 1917, Octo...
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Answered by Anna G. • History tutor
3026 Views