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AQA OCR Edexcel A Level Physics Electric Fields Answers

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1. Total for Question 1: 13 (a) Define the electric field strength at a point in space. [1] (b) State one similarity and one difference between the electric fields produced by charges and the gravitational fields produced by masses. [2] (c) Which two of the following statements are true? i. The direction of an electric field is that in which a negative charge would move. ii. Electric field lines are always perpendicular to the surface of a conductor. iii. The spacing ...

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AQA OCR DNA Fingerprinting Answers

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DNA Profiling Answer Marks 1. a) i) Highly repetitive sequences of DNA bases ii) VNTRs differ in size/length between different individuals -VNTRs occur in lots of different places in the genome between different individuals - The difference in size and location of VNTRs creates a genetic fingerprint unique to the individual which can be used to identify them. b) i)- PCR amplifies DNA - It copies the areas that contain VNTRs using primers - The result is a sample containing man...

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AQA Edexcel A Level Physics Gravitational Fields Answers 2

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1. The graph below shows the variation of the orbital period squared with the radius cubed for Jupiter’s moons. Total for Question 1: 10 (a) Define a gravitational field. (b) By equating the centripetal force and the gravitational force on a planet, show that T 2 = 4π2 r3. [1] [4] (c) Use the result from the previous part and the graph above to calculate Jupiter’s mass. [3] (d) Kepler’s second law states that a line segment joining a pla...

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RASMUSSEN COLLEGE NRSNG NUR 2868 RS exam 3 with notes

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RASMUSSEN COLLEGE NRSNG NUR 2868 RS exam 3 with notes 1. A nurse tells a coworker that he is probably going to call in “sick” tomorrow. The coworker urges him not to do so, because absenteeism creates problems for everyone on the unit. To which problems is the coworker referring? SATA -Inadequate staffing adversely affects patient care both directly and indirectly -Working with inadequate staffing or working overtime to cover for absent workers creates physical and mental stress and...

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