Recent content by Nicholas.D

Homework Statement Describe the difference between a magnetic field and an electric one. Homework Equations N/A The Attempt at a Solution I thought the two were the same or at least linked somehow. I don't understand why a proton will not achieve an increase of decrease in Ek...

I see now, and I think I understand just what to do. My maths looks like this: 2.2/10=x/310 ie I used similar triangles to work out how much of the image of the wall I could see. However, the answers use 300 as the distance from the mirror to the image of the wall and 2.5/10 instead of...

won't the image seen by my eye just be the 5cm^2 portion of the wall reflected by the mirror? I'm having trouble understanding how a section of the wall larger than 5cm^2 can be seen in the mirror if there isn't any magnification

Yeah I did try and draw the set up. To the right of my page I had a vertical line to represent the wall, then in the centre I had a smaller one to represent the mirror. I then tried to draw in a few rays from the top of the wall to the mirror. The only rays however that would form an image...

hmm ok I did try thinking about it like that. I also then tried to draw a few ray diagrams to help, but couldn't really get them to work. The answer uses similar triangles, but again, I couldn't make sense of why it works. If you have a strait mirror that doesn't focus the light onto a focal...

Homework Statement How much of wall 3m behind you can be observed in a 5cmsquare mirror which is held centrally at a distance of 10cm to your eye? Homework Equations N/A The Attempt at a Solution I see no way of doing this