PHY 220 Basic Physics for Biological & Earth Sciences CA 2021
About this paper
PHY 220: Mid-Semester Examination (19/05/2021), PHY220 Basic Physics for Biological and Earth Sciences, Department of Physics, Faculty of Science, University of Buea: the hare-and-tortoise kinematics problem, a football/crossbar projectile problem, electrostatics short-answer questions, charge sharing between identical spheres, and Gauss's-law flux through nested surfaces.
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University of Buea
Faculty of Science - FS
Animal Biology - ZAP
Basic Physics for Biological & Earth Sciences
CA · Second Semester · Level 200
From this paper
A place-kicker must kick a football from a point 36.0m from the goal, and half the crowd hopes the ball will clear the crossbar, which is 3.50m high. When kicked, the ball leaves the ground with a speed of 20.0m/s at an angle of 40 ◦ to the horizontal. a) By how much does the ball clear or fall short of clearing the crossbar? b) Does the ball approach the crossbar while still rising or while falling?
- a.
What is electrostatics? (2mks) b) State three important properties of electric field lines. (3mks) c) Why is a test charge usually very small and positive? (2mks) d) Distinguish between conservation of charge and quantisation of charge. (3mks) e) State the following electrostatic laws: Coulomb’s law, Gauss’ law. (4mks)
At a glance
- Course code
- PHY220 (PHY 220)
- Type
- CA
- Year
- 2021
- Level
- Level 200
- Semester
- Second Semester
- Proposed solution
- Included
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