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A man weighing 600N steps on a scale that contains a spring. The spring is compressed 1cm under their weight. Find the force constant of the spring and total work done on its compression.

relevant equations: F = k*x F is force, k is spring constant and x is displacement from equillibrium. W = 1/2 k x 2 W is work done. rearranging F = k*x and using the information in the question we can solve ...
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Answered by Tabraiz C. • Physics tutor
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Explain, in terms of pressure, how straws draw water into your mouth.

Atmospheric pressure is an expression for the force exerted on a surface (in this case the water surface) per unit area caused by air particle collisions on the surface. In a cup of water, there is a uniform...
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Answered by Benjamin S. • Physics tutor
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Differentiate y = (sin(x))^2 (find dy/dx)

This a relatively simple question which requires the use of the chain rule to solve. First we set u = sin(x) so we then have y = u 2 . Next we perform do differentiations, one on u as a function of x and the...
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Answered by Tabraiz C. • Maths tutor
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Does the author not just mean that the curtains are red?

Although red can be a purely aesthetic description, we must remember that this is a fictive space created by an author to evoke particular emotions, which help us respond to the story they're trying to tell....
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Answered by Anna M. • English tutor
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How can I best convey my attributes to stand out from all of the other applicants?

You should talk about the achievements you are most proud of and demonstrate how these helped form who you are today. This will not only give the admissions office an idea of what you have done but also what...
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