INVESTIGATORY PROJECT 2023-24
“SHREE SAI ACADEMY”
ACADEMIC YEAR: - 2023-24
INVESTIGATORY PROJECT
“TITLE: EXPLORING THE EFFECTS OF PH ON EN
CATALYSE”
ZYME ACTIVITY: A STUDY ON
SUBMITTED TO:
SUBMITTED BY:
MISS JYOTI MOHOD MA’AM
HARSHIKA PANWAR
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Acknowledgement:
I would like to express my special thanks to my physics teacher
“Mr. Siddhart Yadav sir” for his expert direction and
encouragement in helping me finish my project. I would like to
thank our Principal Sir, Mr. Vijay Tiwari, and Vice Principal
Ma’am, Miss Anita Joshi, for providing me with all the amenities
I want.
DATE:
STUDENT NAME:
23/10/2023
Harshika Panwar
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
CERTIFICATE:
This is to certify that Harshika Panwar of class XII B (SHIVI)
has successfully completed her physics investigatory project on
the Topic “To estimate the charge induced on each of the two
identical styrofoam (or pith) balls suspended in a vertical plane
by making use of Coulomb`s law” in the year 2023-24 under the
guidance of Mr. Siddhart Yadav sir.
Teacher’s Signature:
Principal Seal & Sign:
External Signature:
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
INDEX:
S.No
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
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TOPIC
Topic
Introduction
Objective
Enzymes: The Catalysts of Life
What is Catalase?
The pH Scale
Optimal pH for Enzyme Activity
Acidic and Alkaline Environments
The Importance of pH in Enzyme Activity
The Experiment: Studying the Effects of pH on
Catalase Activity.
 Materials Required
 Procedure.
Results: pH and Catalase Activity
Interpreting the Results
Factors that Affect Enzyme Activity
Applications of Enzyme Activity
Limitations of the Study
Future Directions
Conclusion
.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Objective:
To estimate the charge induced on each of the two
identical styrofoam (or pith) balls suspended in a
vertical plane by making use of Coulomb`s law.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Materials Required:
1. Small size identical balls ( pitch or soft plastic )
2. Physical balance or Electronic balance
3. Half meter scale
4. Cotton thread
5. Stand
6. Glass rod ( or plastic rod )
7. Silk cloth ( or woolen cloth )
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Procedure:
1. Weight the mass of each identical pith balls by
balance and note down it.
2. Tie the balls with two silk or cotton threads
and suspend at a point on a stand or a rigid
support. Measure the length of threads by half
meter scale. The length of threads should be
equal. Note down the length.
3. Rub the glass rod with silk cloth and touch
with both balls together so that the balls
acquire the equal charge.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
4. Suspend the balls freely and the balls stay
away a certain distance between the walls
when they become stationary. Now note down
the distance.
5. Touch any one suspended ball with other
uncharged fourth ball and takes the fourth ball
away and repeat the fourth step.
6. Touch other suspended ball with another
uncharged fourth ball and takes the fourth ball
away and repeat the fourth step.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Bibliography:
1. Dixon, M. and Webb, E.C. (1958) Academic
Press.
2. Study.com
3. Research gate.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Thank you
HOPE I WAS ABLE TO CONVEY
MY WORK TO YOU.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Theory:
The fundamental concept in electrostatics is electrical
charge. We are all familiar with the fact that rubbing two
materials together:- for example, a rubber comb on cat fur
– produces a “static” charge. This process is called
charging by friction. Surprisingly the exact physics of the
process of charging by friction is poorly understood.
However, it is known that the making and breaking of
contact between the two materials transfer the charge.
The charged particles which makeup the universe come in
three kinds : positive, negative, and neutral. Neutral
particles do not interact with electrical forces. Charged
particles exert electrical and magnetic forces on one
another, but if the charges are stationary, the mutual force
is very simple in form and is given by Coulomb`s law.
F = k q1q2
R2
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
Where F is the electrical force between any two stationary
charged particles with charges q1 and q2 (measured in
Coulombs), r is the separation between the charges
(measured in meters), and k is a constant of nature (equal
to 9x10^9 Nm2/C2 in SI units).
The study of the Coulomb forces among arrangements of
stationary charged particles is called electrostatics.
Coulomb`s Law describes three properties of the
electrical force:
1. The force is inversely proportional to the square of
the distance between the charges, and is directed
along the straight line that connects their centers.
2. The force is proportional to the product of the
magnitude of the charges.
3. Two particles of the same charge exert a repulsive
force on each other, and two particles of opposite
charge exert an attractive force on each other.
A PROJECT BY HARSHIKA PANWAR
INVESTIGATORY PROJECT 2023-24
A PROJECT BY HARSHIKA PANWAR