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Physics · Karatasi 2 · 2019

52 maswali

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Maswali (52)

Sehemu A

5. 0 alamas

a) Mention three (3) factors that affect the capacitance of a conductor. i) ii) iii) b) Mention types of mechanical energy. c) A body of mass 15kg is raised to a height of 7 metres above the ground in 4 seconds. i) Find the energy possessed by the body after raising it. ii) What is the type of energy possessed by the body?

(a) Mention three (3) factors that affect the capacitance of a conductor. 0 alama
(a)) Mention three (3) factors that affect the capacitance of a conductor. 6 alama
(b)) Mention types of mechanical energy. 3 alama
(b) Mention types of mechanical energy. 0 alama
(c) (i) A body of mass 15kg is raised to a height of 7metres above the ground in 4 seconds. Find the energy possessed by the body after raising it. 6 alama
(c) i) Find the energy possessed by the body after raising it. 0 alama
(c) ii) What is the type of energy possessed by the body? 0 alama

Boresha ili kuona majibu ya mfano.

6. 9 alamas

a) What do you meant by the term momentum? b) State the principle of conservation of linear momentum. c) A rocket expels gas at a rate of 0.5Kg/s. If the force produced by the rocket is 100N. What is the velocity with which the gas is expelled?

(a(i)) What do you meant by the term momentum? 2 alama
(a) i) What do you meant by the term momentum? 0 alama
(a) ii) Write its S. I Unit 0 alama
(a(ii)) Write its S. I Unit 1 alama
(b) State the principle of conservation of linear momentum. 2 alama
(c) A rocket expels gas at a rate of 0.5Kg/s. If the force produced by the rocket is 100N. What is the velocity with which the gas is expelled? 4 alama

Boresha ili kuona majibu ya mfano.

7. 8 alamas

a) What is Fulcrum? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ b) Give two (2) applications of lever. (i) ____________________________________________________________ ____________________________________________________________ (ii) ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ c (i) Using a principle of lever, explain why it is easier to open the door by pushing near the knob than by pushing near the hinges. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ ______________________________________________________________ ______________________________________________________________ (ii) What class of lever is a door? ______________________________________________________________

(a) What is Fulcrum? 1 alama
(b) Give two (2) applications of lever. 2 alama
(c(i)) Using a principle of lever, explain why it is easier to open the door by pushing near the knob than by pushing near the hinges. 4 alama
(c(ii)) What class of lever is a door? 1 alama

Boresha ili kuona majibu ya mfano.

8. 9 alamas

a) What is meant by the term concurrent forces? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ b) Give four (4) applications of equilibrium in our daily life. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ c) A metre rule is pivoted and balanced as illustrated by the diagram below and balanced by a force of 2.5 N. Calculate the weight W. 25cm 10cm 2.5N W _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________

(a) What is meant by the term concurrent forces? 2 alama
(b) Give four (4) applications of equilibrium in our daily life. 4 alama
(c) A metre rule is pivoted and balanced as illustrated by the diagram below and balanced by a force of 2.5 N. Calculate the weight W. 25cm 10cm 2.5N W 3 alama

Boresha ili kuona majibu ya mfano.

Sehemu B

1. 2 alamas

Define geothermal energy.

(b) Define geothermal energy. 2 alama

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2. 3 alamas

List three (3) areas where geothermal energy can be harnessed.

(i) Measure length, depth, internal and external diameters. 1 alama
(ii) List three (3) areas where geothermal energy can be harnessed. 3 alama
(none) What is the type of energy possessed by the body? 2 alama
(iii) Transfer specific amount of liquid from one container to another. 1 alama
(iv) Measure body temperature. 1 alama
(v) Measure any amount of volumes of liquids. 1 alama
(vi) A simple piston pump that injects liquid. 1 alama
(vii) Indicate whether a surface is vertical or horizontal. 1 alama
(viii) A pump used to lift heavy load 1 alama
(ix) Used to see over an obstacle from a hidden position. 1 alama
(x) It enables a liquid to flow without pumping due to pressure difference. 1 alama

Boresha ili kuona majibu ya mfano.

3. 2 alamas

What is a wind mill?

(c) What is a wind mill? 2 alama
(i) The quantity of space that an object occupies is known as ____________ 1 alama
(ii) A body move with a uniform ________________, if its rate of change of displacement with time is _________________ . 2 alama
(iii) The causes of an object to rotate or turn about a fixed point is ___________________________________________. 1 alama
(iv) The force due to gravity produces ____________________ when it acts on a body. 1 alama
(v) The sun’s rays travel ________________ at a speed of m/s 1 alama
(vi) The force which opposes the relative velocity between the layers is referred to as ________________________. 1 alama
(vii) The formation of shadow is evidence that light ___________________________________________________________. 1 alama
(viii) The process of inducing magnetism in a magnetic material is _____________________________________. 1 alama
(ix) A ship floats in water due to the fact that its ________________ become less than that of the water in which it floats. 1 alama
(x) The attraction force between same molecules is called ________________. 1 alama

Boresha ili kuona majibu ya mfano.

4. 3 alamas

Mention three (3) disadvantages of energy caused by wind.

(a(i)) Define Speed 2 alama
(a) i)) Define speed. 2 alama
(ii) Mention three (3) disadvantages of energy caused by wind. 3 alama
(a(ii)) Define Uniform acceleration 3 alama
(a) ii) Define uniform acceleration. 2 alama
(b) Differentiate between uniform acceleration and uniform deceleration 5 alama
(b)) Differentiate between uniform acceleration and uniform deceleration. 3 alama
(c(i)) A car travels at a speed of 10m/s accelerates uniformly at 20m/s². Find its velocity in 5s. 3 alama
(c) (i) A train slows from 20m/s with a uniform deceleration of 2m/s2. How long will it take to reach 5m/s. 4 alama
(c(ii)) A train slows from 20m/s with a uniform deceleration of 2m/s². How long will it take to reach 5m/s. 2 alama

Boresha ili kuona majibu ya mfano.

Sehemu C

9. 20 alamas

Two mirrors are arranged such that they produce nine (9) images of a pin placed between them. Calculate the angle between the two mirrors. The diagram below shows a ray of light AB that is reflected from a plane mirror PQ. Find the size of angle ABC. B P Q 40o A C

(b) i)) Two mirrors are arranged such that they produce nine (9) images of a pin placed between them. Calculate the angle between the two mirrors. 10 alama
(a) i)) Draw a graph of y against x on the graph paper. 5 alama
(b) ii) The diagram below shows a ray of light AB that is reflected from a plane mirror PQ. Find the size of angle ABC. 10 alama
(a) ii) Calculate the mass, M of the wooden meter rule, where N = 10 alama

Boresha ili kuona majibu ya mfano.

10. 0 alamas

Draw diagram of a magnetic line of force between two bar magnets such that. i) North poles facing each other. ii) North pole of one face, south pole of other.

(c i) North poles facing each other. 0 alama
(b ii) Differentiate between angle of declination and angle of dip. 4 alama
(b i) Mention three (3) categories of a magnet. 3 alama
(a) State fundamental law of static electricity. 3 alama
(c ii) North pole of one face, south pole of other. 0 alama

Boresha ili kuona majibu ya mfano.

11. 0 alamas

i) What is a wind mill?

(a i) What are sustainable energy source? 0 alama
(c i) What is a wind mill? 0 alama
(b i) Define geothermal energy. 0 alama
(a ii) State four (4) applications of energy generated from solar. 0 alama
(b ii) List three (3) areas where geothermal energy can be harnessed. 0 alama

Boresha ili kuona majibu ya mfano.

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