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WAEC EXAM RUNS
*Complete Physics obj*
PLS TAKE NOTE:
(i) / means division or divide
2/2 means 2/2 ie 2 over 2.
(ii) * means multiplication
Example: 2*2 means 2×2
(iii) ^ means Raise to power
(iv) Sqr root means means square root sign ie _/
SECTION A ANS 5QUESTION
decrease in height (h)
increase in time (t)
this shows that distance changes with time
given that U=15m3^-1
Using hooke’s law
by increasing the density mosquitoes lavrva than the density of water
A)Energy efficient- so far the best light for interior lighting
B)Low production cost (of tubes, not of the ballasts)
C)Long life of tubes
i)It requires low voltage sources for it to function
ii)It cannot be easily broken
iii)It is cheaper and quite easy to manufacture
If their distance and masses are doubled their corresponding force would also be doubled and the work done respectively
I.e.Workdone=Force * distance
Force= Mass * Acceleration
W= Mg * d
-Acceleration due to gravity
– At maximum height, final velocity is zero
i)pushing someone on a swing.
ii)Tuning a radio to a particular frequency.
A wave front is an imaginary surface passing through the points of a medium oscillatory in phase
11a A dielectric is an electrical insulator that can be polorised by an applied electric field.
11aii) GIVEN: A = 9.6 * 10^-3 M^2
d = 2.25 * 10^4
Eo = 8.85 * 10^-12 F/m
Er = 900
C = /
using; C = EoErA/d
capacity, C = 8.85*10^-12 * 900 * 9.6*10^-3/2.25 * 106-4
C = 33984 * 10^-11
C = 3.3984 8 10^7 F
SECTION B ANS 3 QUESION
Nuclear fission is a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.
A graphite reactor is a nuclear reactor that uses carbon as a neutron moderator, which allows un-enriched uranium to be used as nuclear fuel.
Boron rods are used in
nuclear reactors to control the fission rate of uranium and plutonium. They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning.
All liquid sodium nuclear fission reactors are devices designed to
maintain a chain reaction producing a steady flow
of neutrons generated by the fission of heavy
nuclei. They are, however, differentiated either by
their purpose or by their design features. In terms
of purpose, they are either research reactors or
Boron rods are used in nuclear reactors to control the fission rate of uranium and plutonium. They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning.
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