### Illustrates the difference between acceleration and velocity

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##### Reference no: EM133784

Question1

1) Give an everyday instance that illustrates the difference between acceleration and velocity. Give a case of uniform and accelerated motion.

2) Why do people fault what is in diet energy drinks for actual energy?

3) Think about your energy intake today. Pick one food and identify chain of energy that led to it. What trophic level do you eat from most? Where will energy that you ingest eventually wind up?

4) List and give an instance of an object around you for of each of different types of chemical bonds

Question2

A biconcave lens made from glass with n=1.5. The radii of curvatures are 20cm and 10cm, and thickness is 5cm. An object of height 2cm is placed 8cm to left of surface of the lens

a) Solve this problem considering two refractions taking place at the air to glass after that glass to air boundaries. In other words, don’t use lens equations. Explain final image; location, nature (real/virtual), size, orientation (erect/inverted).

b) Answer part (a) by using a thin lens approximation. Match up to your results with the results found previously and comment.

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