Journal Nov 2017
Mobin Moradi, Allameh Helli 1
Journal Vol 1, No 1, 2017, (P 3-6)
In this article we want to analyze the motion of a ball in a rotating tube of water .We start with calculating the pressure in a rotating tube and finding the overall shape of water in rotating cylinder ,considering the conservation of the water inside it. Finally, after finding the volume that is occupied by the ball in the water ,We write the motion equations for the ball .Here ,we figure out that when the tube is accelerating the ball starts oscillating on a straight line related to the tube and this oscillating motion is extremely dependent on the viscosity number of the fluid or generally speaking, it depends on the coefficient of the friction force .The other thing that happens is that when we put the ball inside the rotating tube (with constant speed)the ball oscillates around it’s equilibrium point and its motion damps and gets steady in its equilibrium point eventually .In our experiment we accelerate the cylinder and find out the oscillation of the ball and we also measure the equilibrium point of the ball and compare it to our theoretical data and plot the graph related to the shape of water and the equilibrium point of the ball in respect to our known parameters .Generally, we can completely describe the motion of the ball by solving the motion equations numerically .During this process we use our knowledge of geometry and calculus to find out the relation between the parameters.
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Constructing a Petri Dish with Capping Ability and
the Ability of Adjusting inside Aeration
Haniyeh Hosseinzadeh,Kimia Abbassi Ghamsari, Farzangan 6 , [email protected]
Journal Vol 1, No 1, 2017, (P 7- 8)
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Studying the Effects of Nigella Sativa and
Honey on the Rat Immune System
Mahsa Dehghanmanshadi, Farzanegan 6 high school, [email protected]
Journal Vol 1, No 1, 2017, (P 9-10)
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Green Nanotechnology Approach in Manufacturing
Dahlia Davoudi, Farzanegan 1 high school, Karaj, [email protected]
Journal Vol 1, No 1, 2017, (P 11)
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The Intelligent Amelioration System for Postural Deformities
SeyedehSara Jalilishani, Farzanegan 3 high school , [email protected]
Journal Vol 1, No 1, 2017, (P 12-13)
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Designed Shoes to Prevent Disease Progression Based on
Fazeleh Shamsabadi, Farzangan high School , Sabzevar, [email protected]
Journal Vol 1, No 1, 2017, (P 14-15)
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An Optical Device to Measure the Glass Properties
kamyar karimi Fakhr, Alame Tabatabaee high school, [email protected]
Journal Vol 1, No 1, 2017, (P 16)
full paper : Journal of Physical Science and Application 7 (6) (2017) 38-42
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بررسی اثر عصاره ي الکلی پوست بادمجان بر مرگ سلول هاي سرطانی معده در انسان
هدي سراج، فاطمه افشاري، زهرا سادات هاشمی،مرضیه تیماجچی، انسیه علمافر، لادن قطبی مدرسه راه شایستگان، تهران
Journal Vol 1, No 1, 2017, (P17)
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Optimizing Maximum Ejecting Speed for…
Mohammadreza Noormandipur, Shahid Beheshti University
Journal Vol 1, No 1, 2017, (P 18)
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Navid Davar, Valiasr Research Home, Torbate Heydarieh, [email protected]
Journal Vol 1, No 1, 2017, (P 19-22)
In this research by simulation and several experiments the parameters which are important to be considered in building a wavelike-fire extinguisher as a new device have been investigated. The most complete hypothesis is based on the phenomenon of vortex or fluid flow. According to this hypothesis, the transmitted audio forms several vortex flows of air with frequency and amplitude, which leads to an increase in the vibrations of oxygen and its removal from the fire environment. By experiments and data analysis, future models are introduced as fire extinguisher too.
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Mahdiyeh Shahrabi Farahani (a) , Ida Rasouli Astani (b), a) Elham school,b) Farzanegan 3,
a) [email protected], b) [email protected]
Journal Vol 1, No 1, 2017, (P 23-27)
To investigate how the resonance of a glass partially filled with liquid depends on various parameters when it exposed to the sound from a
loudspeaker our experiments have been done. It is well known that the pitch of the sound produced by an excited glass shell can be tuned by adding some liquid in it. This investigation is approached through recording the frequencies due to change each parameters by two different methods. The PC software tool FFT – Properties was used to calculate the frequency . Also NCH Tone Generator software was used to produce the sound with a constant frequency. In other method microphone was placed approximately 2 cm below the glass rim and at a distance of about 2 mm from the glass.
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Rozhina Sedigh, Farzanegan 2 high school
Journal Vol 1, No 1, 2017, (P28)
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Mahtab Shakibmanesh, Farzanegan 1 high school ,
Alzahra University, 2016-2020
Journal Vol 1, No 1, 2017, (P29)
Twisting a piece of string at some point causes the string to become buckled. Further twisting that piece of string will eventually cause it to coil around itself forming a Helix-Like structure. In this research, we investigated the formation of the first loop , (and measured the distance of the two ends of the rope towards each other ( D ) and the rotation angle ( R ). Displacements are controlled and the corresponding forces and moments remain passive. Several plastic ropes with different lengths are used. One of the ends of the ropes was fixed and the other end was rotated. Once the first loop occurred, the distance between the two ends of the ropes was measured. The Experiment’s Error was nearly 10% and we only surveyed the mathematical model in two dimensions. The gravity effect is neglected. We concluded that, by using the mathematical model, we can understand when a loop occurs with regards to specific (R) s and (D)s.
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A Mechanical Random Number Generator
Meshkat Sadri, Farzanegan 2 high school
Journal Vol 1, No 1, 2017, (P 30)
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Building Antibacterial Banknotes by Adding Nanosilver Particles
Synthesized in the Gas Phase
Mohammad Ebrahim Naghavi, Mohammad Hossein Asadi-Lari, Amir Hossein Kimyaghalam
Nikan high school
Journal Vol 1, No 1, 2017, (P 31-32)
Silver particles are able to show antibacterial and antiseptic properties at the nanoscale [1,2]. These properties result from an alteration in the binding capacity of silver atoms in the nanosilver particles which enables them to kill harmful organisms through destroying their vital enzymes. Given that currency notes are one of the major sources of bacterial contamination and might be a critical factor in enteric infections and other health problems [3,4], here we propose a new method for producing antibacterial banknotes by using silver nanoparticles.
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Pardis Rafeii, Farzanegan2 high school
Journal Vol 1, No 1, 2017, (P 33-37)
Stretch the free end of the elastic band and then release the glider. Investigate its motion.”Magnus effect has been seen on many flying balls
and cylinders like golf balls and etc. it cause the object to curve away from its principal flight path. In base ball matches when player hits the ball, the ball moves in a certain flight path which is somehow like sagittal diagrams in mathematics. This research concludes an investigation on Bernoulli law and by solving it, a lift for a flying cylinder concerning kutta-Joukowski theorem has been obtained . Experiments were done and by tracking the
movement of the glider from the videos that has been taken, diagrams has been drawn and compared to theoretical ones and the result was a flight path for the glider.
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Sara Eyvazi, Emam Mohammad Bagher high school, [email protected]
Journal Vol 1, No 1, 2017, (P 38-41)
When two wheel’s suitcase is pulled along, under certain circumstances it can wobble side to side so strongly to the limit that it may turn over.
Study this phenomenon. Can it be suppressed or intensified by changing of the luggage packing? By hypothesis such as balance condition and several experiments, important parameters have been investigated.
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ساخت پتري دیش با قابلیت بسته نگه داشتن درب و تنظیم هوادهی به داخل آن
حانیه حسین زاده، کیمیا عباسی قمصر
پژوهش زیست شناسی، دبیرستان فرزانگان 6، تهران
Journal Vol 1, No 1, 2017, (P 43-45)
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Cooling Rack for Keeping Microtubes in Laboratories
(a) Rojina Nikfarman Motlagh, (b) Mina Ghiasi , Farzanegan high school,
a) [email protected],b) [email protected]
Journal Vol 1, No 1, 2017, (P 46)
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