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Physics Past Questions and Answers

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Physics Questions

Question 3756:

Which of the following particles are termed nucleons in a neutral atom?

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A Protons and neutrons
B Neutrons and electrons
C Protons and electrons
D Protons, electrons and neutrons

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Question 3757:

Which of the following statements about the use of radioisotopes is not correct? They are used to

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A Induce mutations in plants and animals to obtain new and improved varieties
B Trace the paths of metabolic processes in plants and animals
C Estmate the age of rocks
D Locate broken bones

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Question 3758:

Which of the following phenomena supports the theory that waves have a particle nature?

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A Electron diffraction
B Photoelectric effect
C Diffraction of light
D X-ray interference

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Question 3759:

A block of wood of mass 5kg is pulled on a platform by a force of 40N as illustrated in the diagram above. If the frictional force, F experienced by the block is 12N, calculate the magnitude of the acceleration of the acceleration of the block

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A 2.4ms<sup style='font-size: smaller;'>-2</sup>
B 5.6ms<sup style='font-size: smaller;'>-2</sup>
C 8.0ms<sup style='font-size: smaller;'>-2</sup>
D 2.4ms<sup style='font-size: smaller;'>-2</sup>

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Question 3760:

Four co-planar forces of magnitudes 10N, 17N, 6N and 20N act at point O as shown in the above diagram. Determine the magnitude of the resultant force

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A 53.N
B 21.0N
C 7.0N
D 5.0N

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