Recent content by danny20051

You're finding the peak value which is the middle of the peak is that not a single point? I don't see the uncertainty in that if you have each specific data point.

I'm pretty sure the calibration was not done correctly so I am going to have to leave the data as is for now. However I'm completely stuck on how I would do error analysis on this. Apart from the uncertainty in the angle of the scatter as I had to measure it what else could I calculate?

The lab instructions have nothing about an offset but I did do a 3 point calibration before recording the data. Am I able to just not include the negative values and start from the first positive value? As for the averaged points would 100 be ok? That would be roughly 30 data points. I feel...

Thanks for the help. I think I understand but just to confirm. I would for example take the first 200 data points and sum the total energy of the 200 points and then divide by 200 for the average. That would be E1 as you said and N1 would be the sum of the impulses for the 200 data points. Then...

There are only about 40 unnecessary zeroes so that shouldn't be too bad. So when you say create 15 channels of 200 and adding them, calling the energy the average energy of the 15. I'm not too sure what you mean. I haven't had to work with this much data before so I don't really understand...

Homework Statement Not sure whether I should be posting this here or in the quantum physics thread but I felt this more of a 'homework' question. So basically I have done an experiment in which I measure the energy of light that has been scattered through a steel rod from a radioactive...

mg = 0.07644N So taking this away from the force the disc exerts on the track due to its velocity still doesn't bring it anywhere near 0.33N Would this be due to the rotational energy of the disc? If so i have no clue how to work out the rotational energy of the disc with the info they provided.

Homework Statement http://moodle.telt.unsw.edu.au/pluginfile.php/1602233/question/questiontext/1933161/1/1188262/Screen%20Shot%202014-04-03%20at%2011.21.21%20am.png[/B] A disc has radius r<<R and mass m = 7.8 g. When released, it rolls on its edge without skidding on the track in the sketch...

s = ut + ½ at^2 Am i meant to use this equation? If so why? I don't quite understand the question.

Thanks, yeh was correct . Any ideas on part b? Have 0 idea where to even start.

A ball travels vertically downwards until it hits a concrete floor with speed 16.1-m/s. It then bounces vertically upwards at 3.4-m/s. Examination of a high speed video shows that the collision took 1.1-ms. Considering just the collision, what is the magnitude of the average acceleration? b)...

Thanks for the quick responses guys, really appreciate it, but still a tiny bit confused, i understand what you guys are saying (i think), but i just want to ask one more question, let's say speed of light is 100m/s and the distance is 1 light second away (100m) and i travel at 0.9 c (90m/s) why...

So basically I am in high school and have done my major exam for the end of the year. It was a good test except for one question that i got totally stumped on. The question said that a planet was 6.7 light years away from earth. A spacecraft has a maximum speed of 0.9c, how long would a clock on...