*PART A*
1a) i) The body tube
ii) The launch jug
ii) The fins
iv) The engine holder
V) The nose cone
Vi) The recovery device
b) i) Telepresence
ii) Broadcasting
iii) Tele communication
iv) internet and multimedia
4) The specific latent heat of vaporization of a substance is the quantity of heat required to change unit mass of the substance from its liquid at the boiling point to vapour without a change in temperature
ii) potential energy is simply stored energy or the energy possessed by a body by virtue of its position while
Kinetic energy is the energy possesed by a body by virtue of its motion # exam guruz
3) The examples of stable equilibrium are :
a) a cone resting on its base
b) a racing car with low centre of gravity and wide base
Examples of neutral equilibrium are;
a) a cone or cylinder or an egg resting on its side
b) a ball on a smooth horizontal table exam guruz
II) a ship is able to float because it is designed to displace a large volume of water, thus providing a big upthrust.
6) Wave front is defined as a line or surface in the path of an advancing wave on which all the particles are in the same phase or state of disturbance
ii) a) circular wave fronts exam guruz
b) the plane wave fronts
No10)
1. Fusion makes more energy than fission.
2. No nuclear waste to figure out how to dispose of safely.
3. Less energy used to fuse than to split
5) a. Sun
b. Wind
II) M1U1 + M2U2 = (M1 + M2) V
M1 = 15kg, M2= 5kg u1=10m/s u2=0 v=?
Momentum before = momentum after
15×10 +5×0 = (15 +5)v
150 + 0 = 20v
150 = 20v exam gurus
V=7.5m/s
*PART B*
12) The second law of motion states that the rate of change of momentum is proportional to the impressed force and takes place in the direction in which the force acts
Il) a. The motion of the pendulum
b. The motion of strings in musical instruments
B. a) resultant force is that single force which acting along will have the same effect in magnitude and direction as two or more forces acting together
b) equilibrium force is that single force which will balance all the other forces taken together.
C) the resultant force
5) a. Sun
b. Wind
II) M1U1 + M2U2 = (M1 + M2) V
M1 = 15kg, M2= 5kg u1=10m/s u2=0 v=?
Momentum before = momentum after
15×10 +5×0 = (15 +5)v
150 + 0 = 20v
150 = 20v
V=7.5m/s
*PART A*
1a) i) The body tube
ii) The launch jug
ii) The fins
iv) The engine holder exam gurux
V) The nose cone
Vi) The recovery device
b) i) Telepresence
ii) Broadcasting
iii) Tele communication
iv) internet and multimedia
4) The specific latent heat of vaporization of a substance is the quantity of heat required to change unit mass of the substance from its liquid at the boiling point to vapour without a change in temperature
ii) potential energy is simply stored energy or the energy possessed by a body by virtue of its position while
Kinetic energy is the energy possesed by a body by virtue of its motion exam guruz
3) The examples of stable equilibrium are :
a) a cone resting on its base
b) a racing car with low centre of gravity and wide base
Examples of neutral equilibrium are;
a) a cone or cylinder or an egg resting on its side
b) a ball on a smooth horizontal table
II) a ship is able to float because it is designed to displace a large volume of water, thus providing a big upthrust.
6) Wave front is defined as a line or surface in the path of an advancing wave on which all the particles are in the same phase or state of disturbance
ii) a) circular wave fronts
b) the plane wave fronts
No10)
1. Fusion makes more energy than fission.
2. No nuclear waste to figure out how to dispose of safely.
3. Less energy used to fuse than to split
5) a. Sun
b. Wind
II) M1U1 + M2U2 = (M1 + M2) V
M1 = 15kg, M2= 5kg u1=10m/s u2=0 v=?
Momentum before = momentum after
15×10 +5×0 = (15 +5)v
150 + 0 = 20v
150 = 20v
V=7.5m/s
3a) examples for *stable equilibrium*
A book lying on a horizontal surface
and bodies lying on the floor such as chair, table etc.
*Examples for *neutral equilibrium*
ii) a ball placed on a horizontal surface and a cone supported on its side on a horizontal surface
_________________________
No 10 ..
1.fusion is more easily achieved eith lightest elements such as hydrogen
2.the raw materials required for fusion are more cheaply and readily available
3. Fusion process produces less dangerous (i.e non radioactive ) by products.
_________________________
12ai)
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
_____________________________
12aii)
Pendant in a clock
Swing
Suspended spring with mass attached
An object moving back and forth between rubber buffers along an air track
__________________________
12bi)
A resultant force is the single force and associated torque obtained by combining a system of forces and torques acting on a rigid body. The defining feature of a resultant force, or resultant force-torque, is that it has the same effect on the rigid body as the original system of force
17b)
It increases the life span of the machine
It reduces wear nd tear.
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