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What does Decartes mean with his statement 'I think therefore I am'?

Previously in his meditations Decartes attempts to question everything he takes to be given as true through methodological skepticism. He finds that everything in the world around him can be questioned, but ...
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Answered by Zinet R. • Philosophy tutor
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A t-shirt is in the sale section of a store. It has 20% off and the new sale price is £12. What was the original price of the t-shirt?

Original Price x Percentage Multiplier = New Price Percentage Multiplier = (100-20)/100 = 0.8 OP x 0.8 = £12 OP = £12/0.8 = £15
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Answered by Katy B. • Maths tutor
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What is Kants kategorical imperative?

Kant's kategorical imperative is a maxim - a rule - which states that all your actions must be such that they could creature the foundation for a law about how everyone ought to act in similar situations. In...
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Answered by Zinet R. • Philosophy tutor
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Outline one study that has investigated stress-related illness and the immune system. In your answer you should refer to what was done and what was found. (4 marks)

One study which investigated into the relationship between stress-related illness and the immune system was carried out by Kiecolt-Glaser et al (1984). They used medical students to look into whether short t...
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Answered by Tina S. • Psychology tutor
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A ball is projected at an angle b from the horizontal. With initial velocity V the ball leaves the ground at point O and hits the ground at point A. If Vcos(b) = 6u and Vsin(b) = 2.5u, how long does the ball take to travel between O and A.

This is a classic 2-D projectile question. The best way to solve this problem is to split the velocity into its x and y components. In the x-direction a projectile has no forces acting on it (as we neglect a...
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Answered by Tristan C. • Maths tutor
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