Earlyface

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CONFIRMED PHYSICS THEORY ANSWERS


8 Step 1 of 6 Connect one wire to the penny and the spoon. The other end of these wires will be connected to the battery. Step 2 of 6 Connect the penny's wire to the + terminal of the battery. Step 3 of 6 Connect the penny's wire to the - terminal of the battery. Do not allow the penny and spoon to touch. Step 4 of 6 Place about 1 inch of copper sulfate in the glass container. Step 5 of 6 Dip the penny into the copper sulfate solution. Step 6 of 6 Dip the spoon into the copper sulfate solution. The copper should be deposited on the spoon after only a few minutes.

[6a] A harmonic is a signal or
wave
whose frequency is an integral
[whole
number] multiple of the
frequency of some reference signal or wave.
The term
can also refer to the ratio of
the
frequency of such a signal or
wave to the frequency of the reference signal or
wave.
(6b)
(i)Damped oscillation
(ii)Free oscillation Answers stil Loadincom online.

7(a)it means dat d potential
difference i.e pressure bet d
interval is 240v and d power
consumed is low 7(b) v=240v
p=100 p=iv I=p/ v=100/240
I=0.416A I=0.42A




No( 8.The spoon is used as the cathode of voltmeter. The anode is made of the electroplating material (silver).the electrolyte must be the salt of the metal to be deposited . The spoon is made the cathode of the voltmeter containing silver nitrate solution. The anode is pure silver nitrates breaks into Ag+ amd NO3- ions. Ag + drifts to the cathode where they are deposited. On the spoon with time, the spoon gets covered with silver while NO3 remains in the solution to react with silver nitrate, thus maintaining the concentration of the silver nitrate solution.


9(a)The deformation
is said to be elastic
if the material
returns to its
 original shape and
size upon removal of the applied load

9(b)
f=force applied
e=
workdone=average
force*extension
=1/2 f*e since f=ke(Hooke's law)
work done=energy stored
=1/2(ke)*e
=1/2ke^2 or 1/2fe

(10a) Wave particle duality of
matter explains d behaviour of
a wave as well as particle.
Einstein gave illustration of
matter as moving particles
whose energy is related by E=hf while the wave theory illustrates
matter as wave with amplitude,
and can undergo
refraction,diffration,reflection
which are the properties of
wave (10b) (I) Light undergoes
reflection which is a wave
property

 (12ai) Heat is transmitted in a vaccume by the process of radiation whichmeans there is no material medium for the transmission andthe intervening medium is not affected (12b) (i) change in electric potential difference or current between two metal juction at different temperature (ii) change in volume of liquid with temperature (12c) m=6.0*10 raise to 3-mass of towing van m=2 mass of car V=4mls But change in velocity= (4-2.5)m/s =1.5m/s Therefore momentum=mv 6*10 raise to 3*1.5=9000kgm/s F=ma 900=m*v M=9000/4 M=2250kg.

 (1) (A) micrometer screw guage (B) stop watch (C) meter rule (D) thermometer (E) chemical balance (F) measuring cylinder (14A) The capacitance of a capacitor is defined as the amount of charge received when the potential difference between the plates is 1voltm (14B) (i)Presence of a dielectric
material, effective surface area of overlap of the two parallel plate. (ii) - it is used for storing charges -used in ignition systems -used in elimination of sparks - used in radio circuits (C) - workdone against friction in the bearing. And commutator -eddy current formed in the soft- iron cylinder. This is reduced by liminating the cylinder -heat losses in the widings (14di) ES/ EP=NS/NP ES=240;EP=100W NS=?,NP=9600V NS=(ES*NP)/EP = (240*100)/9600 =2400/9600 NS=2.5 {