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Calculating the magnetic flux

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

Calculating the magnetic flux Calculating the magnetic flux Hi, I am doing the experiment posted on this website called High Speed Magnets: Exploring Faraday's and Lenz's Laws (the experiment is at: https://www.sciencebuddies.org/science- ... -lenzs-law). More specifically, I am doing the experiment on how the rate of change of the magnetic flux affects the voltage of electricity induced in the coil (Faraday's law). The rate of change of the magnetic flux will be made different by dropping… Read more

Calculating the magnetic flux

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

Calculating the magnetic flux Calculating the magnetic flux Hi, I am doing the experiment posted on this website called High Speed Magnets: Exploring Faraday's and Lenz's Laws. More specifically, I am doing the experiment on how the rate of change of the magnetic flux affects the voltage of electricity induced in the coil (Faraday's law). The rate of change of the magnetic flux will be made different by dropping the magnet through the coil at different heights. From that, I will know the… Read more

What to research for information

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

What to research for information What to research for information I am doing a science fair project on finding out if more people are right or left sided and I was wondering if you could help me figure out what to research for more information on the subject? Re: What to research for information This question has been asked previously. You might find the response to that question helpful. https://www.sciencebuddies.org/science-fair-projects/ask-an-expert/viewtopic.php?t=15059 Read more

Help!! How do you increase total harmonic distortion?

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

Help!! How do you increase total harmonic distortion? Help!! How do you increase total harmonic distortion? Hi, I'm investigating the relationship between total harmonic distortion (THD) of an alternating current and power output in my physics project. I'm planning on using a multimeter to measure current frequency and then calculating THD using the equation THD=[√(I²-I₁²)]/I₁, where I₁ is the RMS of the fundamental wave. I have never done a practical using alternating current before (maybe… Read more

please help me

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

please help me please help me what mosfet and diode did you use on your Motion-Activated Guard Robot (BlueBot Project #1) please help me its for my project in school Re: please help me Hi, here are the parts we use, but Jameco has a $20 minimum order otherwise they charge you extra for… Read more

Microbiology

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

Microbiology Microbiology I am currently doing a science project where I test to see if dental chews help reduce oral bacteria species in a dogs mouth. With this I am going to swab a dogs mouth before and after given a dental chew. What is the best way to count bacteria without growing it? Can I make a bacterial suspension and place in hemocytometer? What is the best way to do this? Read more

Help! I need help for this explanation!

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

Help! I need help for this explanation! Help! I need help for this explanation! Put the following in order of increasing vapour pressure and justify why: propan-1-ol, butane, propan-1-one? Thank you! :D Re: Help! I need help for this explanation! Is this post about a hands-on science project or is this a lab assignment? The experts here at Ask-the-Expert do not help with homework or lab assignments. If you are doing a science project, please provide more details, such as your hypothesis… Read more

Microbiology

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

Microbiology Microbiology I am doing a science project where I am testing to see if dental treatments help reduce bacteria in a dogs mouth. So I am going to take a swab of the dogs mouth before and after given a dental chew, I will then transfer this to agar plates to grow? What is the best method to do this? Would I need a control? How do I count bacteria after it is grown? Re: Microbiology Hi PearlDaisy, I hope you are having a great day! Below I have answered your questions and provided… Read more

Falling objects

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

Falling objects Falling objects Hi! Need some help for my son's science fair project about gravity and falling objects. He is supposed to make different objects fall at the same time from the same height to test if they hit the ground at the same time or not. We are having a hard time selecting the objects. We need 2 objects of same mass, 2 objects of same size, but different mass, and two objects of different size/shape but same mass. Could you post recommendations of household items we can… Read more

(HELP) Explore How Chromatography Can Unmix Mixtures

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

(HELP) Explore How Chromatography Can Unmix Mixtures (HELP) Explore How Chromatography Can Unmix Mixtures Hello so I am struggling on this specific project (https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p009/chemistry/paper-chromatography-advanced-version-1#procedure) and was wondering if anybody could help me or answer some of my questions. 1. In step 3 it states" Pour a small amount of your your first solvent (water) into the 100 mL beaker". I wondering if the… Read more

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