Re-upload: Rod & Hexnut labs

To start off, my name is Jennifer Yoo and welcome to my blog! There will much more to come, so check daily! This is my first time actually writing a blog, so it might not be great, but I'll try my best to improve over the course of the year. During the first few weeks of school, we did multiple labs with our groups. After finishing all the labs, we had class discussions and explained what our equation was, what went wrong, and what type of graph we had.

For the rod lab, our group measured different size rods and the mass of each one on a triple beam balance scale. The question we were given was, "How does the length of a rod affect its mass?" The hypothesis we created was that as the length of a rod increased, the mass would also increase. Our group thought that this graph was linear because the slope was consistent and had a direct relationship. We did try other graphs such as polynomial and quadratic, but the line didn't fit as well as linear. I think we did have some miscalculations because our y-intercept should have started at 0 not 0.1522, since there's no rod to begin with.

In conclusion, as the length of a rod increases, the mass also increases. 

 

The next lab we did was the Hex Nut lab. We were given multiple Petri dishes that held different amounts of hex nuts in them. We then measured them on a triple beam balance scale. The question our group was asked was, "How does the number of hex nuts affect the mass of the container?" Our prediction was that as the number of hex nuts increased, the mass would also increase. We decided that this graph was linear because the line was going in a upward direction consistently. Our class discussed that for every hex nut added, the mass of the Petri dish increased by 7. 16.59 alone was the mass of the Petri dish.

 

 

 

 

 

 

In all, as the number of hex nuts increase, the mass would also increase.

 

My thoughts: I feel like these labs and class discussions help a little bit, but not too much. I'm still a little confused with Physics and the how the whole process works. It's probably because I'm not adjusted to the class yet. I also hope to do well because I'm having a hard time understanding some of the concepts. I think my group and I cooperate well together. Lastly, I hope to learn and understand more as the year advances.

Deleted posts

 I just wanted to inform you guys that I accidentally deleted my previous posts... I didn't know deleting the posts in your draft would delete them on your blog also! I hope I can quickly recover these! Wish me luck!

Car labs

Hey guys! My fourth post... Sorry for not posting as much as I should be doing. Okay, so today I'm going to be discussing the car labs my class did on Friday. First off, we were supposed to measure the distance of how far our toy car would go in the selected amount of time we chose. We decided to measure how far our car would go every 5 seconds. (mode of car= slow) The amount of time doesn't really matter, some groups did 10 seconds. Keep this in mind though, you cannot stop the car, it has to go all in one run. We recorded at least 5 measurements for our data. Process of our experiment: My group put a long strip of tape on the ground, so we could mark the measurements. We also put a meter stick next to it, so at the end, we could measure how far each mark was away from the reference point (location of where the car started at). I located the car in the middle (between meter stick and strip of tape) and then clicked the on button, as Roxy (group member) timed the toy car. While she was keeping track of the time, she told Joanna (other group member) to mark down the measurements on the tape for every 5 seconds.

Car lab #1

 

 notes that I jot down

As you can see, our data is pretty accurate comparing to what we should've really gotten. We also did the 5% rule and ours passed.

Car lab #2 wasn't much difference. It was pretty much the samething, except our toy car started 50 cm away from the reference point.

Car lab #2

 

notes

 

Our second data was also pretty accurate, except for the last measurement, which was off by 10.

 

Reflections: I actually had a pretty fun time doing this experiment. My group and I cooperated very well together and didn't really have any complications. I think time was only one because we weren't give so much.