Physics Essays
1. Design of driver head and pile:
Design
The mass of the
driver head should be
big.
Driver head should
be raised higher
before dropping
The contact surface
between the driver
head and pile should
be hard.
3. Design of spring in suspension car
system:
Reason
So that, the driver
head will have a high
momentum or inertia
when falls.
Have a higher velocity
to increase momentum
when it strikes at the
pile.
To reduce the time of
impact so that a large
impulsive force is
produced
2. Design of more efficient generator:
4. Suitable radioisotope in detecting
leakage in underground water pipes:
5. Suitable cables used as transmission
cable:
8. Design of loudspeaker and hall to
produce loud and clear sound:
Design
The loudspeakers are
not installed against
each other.
Reason
Multiple reflections
will not happen.
Loudspeakers are
installed at a far
distance from each
other.
Use soft board for the
wall of hall.
So that the distances
of constructive and
destructive
interferences are
bigger.
So that the sound
output will be loud
and clear.
To reduce echo of
sound waves.
Cover the floor with
carpet or use sound
proof flooring.
Sitting area is
arranged in the
antinode region only.
No reflection of sound
wave from the hard
floor.
So that louder sound
can be heard by
audience.
Use high powered
loudspeakers.
6. Suitable liquid as coolant in car engine:
9. Modifications to improve the reception
television signals:
7. Suitable liquid used in thermometer:
Design
Use wave of longer
wavelength.
Reason
To increase the effect
of diffraction.
Set up the transmitter
on hill tops.
Install a relay
transmitter on the hill
top to amplify and
retransmit the signals
Build a taller signal
receiver at house.
The signal will not be
blocked.
To increase the
strength of signals
Increase the strength
of signals.
Able to receive the
signals without
disruption.
The signals can travel
further.
10. Modifications on a car to make it safe
for drive:
12. Design of thermometer:
The wheels does not
lock during hard
braking and cause the
car from skidding.
11. Design of water rocket and its launcher:
13. How to convert dc generator to ac
generator and modifications that can be
done to increase the induced current
generated.
14. Design of submarine:
15. Design of Formula One racing car to
achieve maximum acceleration and
stability:
16. Modifications on the desk lamp used by
the student: