**OBJ IN WORDS FORMAT**

1. kilogram, meter and second

2. Vernier caliper

3.

4. gravitational force

5. Average velocity

6. ohm

7. slope of the lonear portion (AB)..

8. the adhesion btwn water and glass molecules is greater than the cohesion among the water molecules

9. 2.0 ms-2

10. u2/2g

11. Temperature

12. Temperature of the liquid

13. 0.5Ns

14. Screw jack

15. 4.69mm

16. Nm^2 Kg ^-2

17. Electric to heat

18. Temperature

19. 1000.oJ

20. Q will be less than pressure at R

21. 98.6 degreeF

22. Polarized

23. red

24.

25. 0.04m

26. elasticity

27. I and III only

28. 1/24cm

29.

30. real, magnified, inverted

31. 0.250ms^-1

32. sinusoidal

33. Low value resitor connected accross an AMMETER

34.

35. Increase in the distance btwn the plates

36. GHC 79.20

37. 0.5 height and 4.0m width

38. 400ms^-1

39. mechanical, heat and sound energy

40. doubling the inductance

41.

42. Longer and thinner

43.

44.

45. 6 ohms

46. Henri Becquerel

47. both energy and momentum

48. intensity at incident radiation

49. Have long wavelength

50. 1.02×10^-7

1a)

Tensile Stress / Tensile Strain = Young Modulus

1.B. Energy transformation. * Potential energy transformed to kinetic energy

4a)

Geo stationary satellite is used to provide visible and infrared images of Earth’s surface and atmosphere.

b) Polar orbits satellites are often used for earth-mapping, earth observation, capturing the earth.

(5a)

(i) Centripetal force

(ii) Centrifugal force

(5b)

Ft = mDv

where F = force

t = time

Dv = change in velocity

m = mass of object

Hence F = mDv/t

(6a)

(i) It can cause short and long term sun burn effects.

(ii)It can cause blindness when flashed to the eyes.

(6b) Energy = hf

= 6.60Γ10^-34 Γ 4.82Γ10^14

= 3.18Γ10^-19J

= 1.99ev

=====================================

(7)

V = 2ΟR/T

R = 9.6Γ10^6 + 6.4Γ10^6 =16Γ10^6 m

T = 24hrs =(24Γ60Γ60)s

V = 2Γ3.142Γ16Γ10^6/24Γ60Γ60

V = 1162.96m/s

8a) Mass is the amount of material contained in a body and the SI unit is Kg while Weight is the force exerted on a body by the gravity of the object. ..Mass is a scalar quantity( It has not specific direction), While Foce is a vector quantity (Its in the same direction with gravity)

8ai

Mass is measured in Kg

Weight is measured in Newton

Mass is a scalar quantity

Weight is a vector quantity

Mass is constant

Weight varies

8aii) Clockwise moment about the pivot.

Moment = Force x Distance

Moment = 250 x 0.75

Moment = 187.5Nm

8bii (the value of F)

Clockwise moment = Anti clockwise moment

Fx(1.5+0.75) + 50x 0.75 = 250 x 0.75

F x 2.25 + 37.5 = 187.5

2.25F = 187.5-37.5

2.25F= 150

F = 150/2.25

F= 170.83N

(11a)

Lenz’s law states that an induced current is in such direction that it’s magnetic effect opposes the change by which the current is induced.

(11b)

(i) Magnets are used in construction of speakers.

(ii) They are used to store data in computers.

(iii) Used in magnetic resonance imaging machines.

(11ci)

(a) Two coils: So as to produce an induced current from one coil to the other.

(b) an iron core: To increase the strength of the magnetic field.

(11cii)

(11d)

Total resistance in series

Rt = R1 + R2

= 500 + 400

Rt = 900ohms

Taking E = 6v

E = V + ir

E = VR + Ir

E = I ( R + r)

I = E/R + r

taking r = 200ohms

I = 6/900+200

I = 6/1100

I = 0.005A

Hence the voltmeter reading

V = IR

= 0.005 Γ 200

= 1.09v

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