{"id":196,"date":"2023-04-01T12:35:47","date_gmt":"2023-04-01T12:35:47","guid":{"rendered":"http:\/\/localhost\/solvefor2\/?p=196"},"modified":"2023-04-01T12:42:30","modified_gmt":"2023-04-01T12:42:30","slug":"physics-questions-paper-senior-three","status":"publish","type":"post","link":"https:\/\/edu.co.tz\/notes\/physics-questions-paper-senior-three\/","title":{"rendered":"PHYSICS QUESTIONS PAPER SENIOR THREE"},"content":{"rendered":"

COACH ALLY VOCATION TRAINING CENTER
\n<\/span><\/p>\n

PHYSICS PAPER
\n<\/span><\/p>\n

SENIOR THREE
\n<\/span><\/p>\n

Instructions: Answer ALL questions under this paper\n<\/p>\n

\n\u00a0<\/p>\n

Time allowed 1 hour\n<\/p>\n

\n\u00a0<\/p>\n

1. (a) Define the terms scalar and vector and give examples in each\n<\/p>\n

(b) Distinguish between scalar quantities and vector quantities\n<\/p>\n

(c) What is relative velocity\n<\/p>\n

(d)Two cars A and B are moving along a straight line road in the same direction with velocity of 38 km\/h and 66 km\/h respectively.\n<\/p>\n

(i) Find the velocity of car A to car B (ii) if two cars A and B are moving along a straight road in opposite direction .\n<\/p>\n

\n\u00a0<\/p>\n

2. (a) Explain with examples the term friction (b) Define the following terms (i) normal reaction (ii) limiting friction\n<\/p>\n

(iii) coefficient of dynamic friction (iv) coefficient of static friction\n<\/p>\n

(b) Mention three advantage and three disadvantages of friction\n<\/p>\n

(c) Massamu has a mass of 8kg , she slides on an inclined plane and makes the angle of 450<\/sup> with the horizontal\n<\/p>\n

if the frictional force is ignored find the acceleration of Massamu.\n<\/p>\n

\n\u00a0<\/p>\n

3. (a) Define the term energy and state it’s si unit (b) Define the si unit of energy (c) List (8) different forms of energy\n<\/p>\n

(d) Mention two forms of mechanical energy (e) Differentiate the two forms of mechanical energy\n<\/p>\n

(f) A stone of mass 6kg is lifted by Angel to a height of 10m above the ground . Find the potential energy of the stone\n<\/p>\n

take [g= 10m\/s2<\/sup>]\n<\/p>\n

(g) A train of mass 250kg is travelling at 100km per hour . calculate the kinetic energy of the train.\n<\/p>\n

(h) The kinetic energy of the girl of mass 20kg is 1000J. what is her speed?\n<\/p>\n

\n\u00a0<\/p>\n

4. (a) Define the following (i) static electricity (ii) charge (iii) capacitance (iv) electroforus (v) goldleafe electroscope\n<\/p>\n

(b) Briefly explain the ways of charging a body (vi) outline the ways of charging a gold leaf electroscope\n<\/p>\n

(c) State the electronic law of repulsion and attraction. (d) Draw a well labeled diagram of a gold leaf electroscope.\n<\/p>\n

\n\u00a0<\/p>\n

5. (a) Define the following terms and state their si unit (i) electric current (ii) resistance (iii) resistivity (iv) conductor\n<\/p>\n

(b) State ohm’s law (c) What are the limitations of ohms law (d) Given the potential difference of the circuit is 9v\n<\/p>\n

and the current is 3A . find the resistance of the circuit.\n<\/p>\n

6. (a) What Is meant by a fuse (b) How does fuse prevent the large current from entering the circuit in the appliance\n<\/p>\n

(c) Fuse wires are labeled 1A, 1.6A, 9A , 30A and 40A . Which of this is most suitable for\n<\/p>\n

(i) A refrigerator rated 250V , 400W (ii) The electric cooker rated 240V,7.2 kw (iii) The electric iron rate 2240V,2kw\n<\/p>\n

(iv)Water heater rated 240V,9.48kw\n<\/p>\n

(d) A domestic lamp is marked 240V, 60W. calculate the (i) maximum current it takes (ii) resistance of the filament of\n<\/p>\n

the lamp.\n<\/p>\n

THE END\n<\/p>\n

BY BROTHER JUMA PHYSICS DEPARTMENT<\/p>\n","protected":false},"excerpt":{"rendered":"

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