Ask an Expert (Page 20)

Ultrasonic levitator

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Ultrasonic levitator Ultrasonic levitator Hello! We're working on ultrasonic levitator project. We managed to get it to work with one inverter but it was fairly weak - we got one piece of foam levitating but the transmitters were only about 1 cm above each other. We followed instructions to add additional inverter and the signal seems to be stronger but we are not able to levitate the foam pieces as they always fall off or are pushed off. Any ideas how to approach it / fix it?… Read more

Advanced Ecology

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Advanced Ecology Advanced Ecology Good Day Experts! May you please suggest ideas for a very short research article (final requirement) that tackles on population ecology. I only have two months left to perform and write the report. Our teacher wants it to be experimental. My initial idea is to use fruit fly because they are faster to rear and can provide fast results. I want to subject a population/s to a specific parameter and see how would the population/s react (mortality? egg… Read more

Science Fair Project Question (Reducing Landfill Emissions)

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

Science Fair Project Question (Reducing Landfill Emissions) Science Fair Project Question (Reducing Landfill Emissions) Hi, I'm doing a project where I want to find the best method to reduce landfill gas emissions. I will do this by running an experiment with a simulated landfill in a bottle. However, I need help coming up with variables/methods for my experiments. I want 5 realistic and easily attainable methods, and so far I have 3 (control with normal landfill conditions, removal of… Read more

Question on the formula for finding the frequency when doing the ultrasonic transmitter project.

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Question on the formula for finding the frequency when doing the ultrasonic transmitter project. Question on the formula for finding the frequency when doing the ultrasonic transmitter project. Hi I am back again with another question, i am trying to use the provided formula to find the frequency. periodMS = 4*numPulses*(Delaytime+digitalwritetime) Frequency(Hz) = 1/periodS i am using the formula but it is giving me an unrealistic frequency, when i use the variables given in the video the… Read more

Smart Automated Pill Dispenser

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Smart Automated Pill Dispenser Smart Automated Pill Dispenser Hello! I am doing science fair currently and my project is a smart automated pill dispenser. Attached is my circuit board from tinkercad. So I am using an Arduino UNO R3 and I have an LCD That will display live RTC Clock, but it shows wrong time and date. It also makes me change the date and everytime I reset, it starts from 12 am. This is the only thing I need to fix and also I have to add specific timings for the beeping noise.… Read more

Electromagnetic Train

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Electromagnetic Train Electromagnetic Train Hello, I am trying to do a project on how magnets in electromagnetic trains affect the speed, but I can't find a project that can represent that. Even if I try to find something close to it so I can just add the extra steps to the procedure, no website or place has a procedure specific enough for me to use. Can you help me? Re: Electromagnetic Train Hi - the two projects on our site that come closest to what you need would be… Read more

Question about Project of Effect of Different Wing Design on Aerodynamics of a Plane

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Question about Project of Effect of Different Wing Design on Aerodynamics of a Plane Question about Project of Effect of Different Wing Design on Aerodynamics of a Plane Hi everyone, I was hoping to do the project Effects of Different Wing Design on Aerodynamics of the Plane. I was planning to make a homemade wind tunnel and then use three-four different types of planes. However I'm confused about that. How do we find the planes each with a different design? Do we make our own? Thank… Read more

Cool Project

Ask an Expert Topic Forum: Grades 9-12: Math and Computer Science

Cool Project Cool Project Hi there, I'm 4th year ME student and trying to understand and study some basics of my project which is named [b]AI-based Black-box Model Generation and Learning on Vehicle Parking[/b] . I worked and took a look on following project on the website. https://www.sciencebuddies.org/science-fair-projects/project-ideas/ArtificialIntelligence_p008/artificial-intelligence/machine-learning-maze?ytid=QUNM-QyM5PA&ytsrc=description How I can proceed from now on ,I could not… Read more

Question about Elephant Toothpaste activity

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Question about Elephant Toothpaste activity Question about Elephant Toothpaste activity what is the chemical equation for the reaction ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/elephant-toothpaste]Elephant Toothpaste[/url] Re: Question about Elephant Toothpaste activity Hi! The chemical reaction for elephant toothpaste is 2 H₂O₂ → 2 H₂O + O₂ (gas). Basically your hydrogen… Read more

Clinostat Arduino Project

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Clinostat Arduino Project Clinostat Arduino Project Posted on behalf of student Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/PlantBio_p054/plant-biology/plants-grow-microgravity-arduino-clinostat ------------------ Hi, I am building the clinostat with the Arduino Uno R4 Minima and after inputting the code and downloading it to the arduino, the motor won't turn or work, what do I do? Read more

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