Dimensional analysis Definition and 254 Threads

Hello I'm learning physics and also brushing up on some math (its been 10yrs) and I encountered difficulty in understanding Dimensional analysis. I don't really understand how they know what number goes on top or what goes on bottom. I've read some explaintations but they just confused me...

Hi I am currently enrolled in PHY138Y1 and I need some major help in some homework questions.I'm a first TIME physics student and I have no idea what I'm doing. I attempted these questions, but I still don't comprehend what the question is asking for. There are some questions that I am having...

In the equation y=c^nat^2, in other words... Y equals C to the N power times A times T to the second power, you wish to determine the integer value (1,2,etc.) of the exponent N. The dimensions of Y,A,and T are known. It is also known that C has no dimensions. Can dimensional analysis be used to...

dimensional analysis (Please help as soon as possible!) The Space Shutte astronauts use a massing chair to measure their mass. The chair is attached to a spring and is free to oscillate back and forth. The frequency of the oscillation is measured and that is used to calculate the total mass m...