Search found 30 matches

by Sean_Sylvester1
May 18th, 2017, 6:39 am
Forum: 2017 Nationals
Topic: Ultimate Frisbee Tournament!
Replies: 5
Views: 1871

Re: Ultimate Frisbee Tournament!

Merrimack will bring two teams
by Sean_Sylvester1
May 14th, 2017, 5:28 pm
Forum: 2017 Nationals
Topic: Who's Going to Nationals 2017?
Replies: 66
Views: 12279

Re: Who's Going to Nationals 2017?

Div C NH represent!
by Sean_Sylvester1
March 23rd, 2017, 5:29 am
Forum: 2017 Question Marathons
Topic: Optics B/C
Replies: 127
Views: 14988

Re: Optics B/C

Alright so here's a quick conceptual question. You have a converging lens and divide the face into 4 equally sized areas. You then try to project an image using the lens. What happens when you place a piece of paper over quadrant 1,2,3 and 4. How about just 1 and 2 , or 1 and 4 Using the principle ...
by Sean_Sylvester1
March 21st, 2017, 6:59 pm
Forum: 2017 Question Marathons
Topic: Optics B/C
Replies: 127
Views: 14988

Re: Optics B/C

correction I meant to say concave mirror
by Sean_Sylvester1
March 21st, 2017, 6:54 pm
Forum: 2017 Question Marathons
Topic: Optics B/C
Replies: 127
Views: 14988

Re: Optics B/C

Alright so here's a quick conceptual question. You have a converging lens and divide the face into 4 equally sized areas. You then try to project an image using the lens. What happens when you place a piece of paper over quadrant 1,2,3 and 4. How about just 1 and 2 , or 1 and 4
by Sean_Sylvester1
March 19th, 2017, 7:45 pm
Forum: 2017 Question Marathons
Topic: Optics B/C
Replies: 127
Views: 14988

Re: Optics B/C

Almost. To find the front vertex power you need to subtract the equivalent focal length by the distance from the front of the lens to the first principal plane. Is it 64 diopters then? Since the equivalent focal length is the inverse of power and then subtract .09 from that Keep in mind that the fr...
by Sean_Sylvester1
March 19th, 2017, 4:38 pm
Forum: 2017 Question Marathons
Topic: Optics B/C
Replies: 127
Views: 14988

Re: Optics B/C

A certain lens has an index of refraction of 1.5, a front lens radius of 0.09 m, and a back surface lens of -0.04 m according to the cartesian sign convention. If it is 0.10 m thick, determine the front vertex power. Using the lensmakers formula and its derivation for thick lenses, I came up with a...
by Sean_Sylvester1
March 19th, 2017, 11:07 am
Forum: 2017 Question Marathons
Topic: Optics B/C
Replies: 127
Views: 14988

Re: Optics B/C

That's correct; your turn! A certain lens has an index of refraction of 1.5, a front lens radius of 0.09 m, and a back surface lens of -0.04 m according to the cartesian sign convention. If it is 0.10 m thick, determine the front vertex power. Using the lensmakers formula and its derivation for thi...
by Sean_Sylvester1
February 19th, 2017, 4:46 pm
Forum: Electric Vehicle C
Topic: Electric Vehicle C
Replies: 179
Views: 26132

Re: Electric Vehicle C

Sorry to double post, but we have a *slight* problem. Every time we run our program, the motor doesn't even get up to the full speed defined in the program before it simply cuts off, and we can't figure out why. Can anyone help us? edit: and also regionals is tomorrow sooo... :( If it's not too lat...
by Sean_Sylvester1
February 19th, 2017, 4:39 pm
Forum: 2017 Lab Events
Topic: Hovercraft B/C
Replies: 906
Views: 133488

Re: Hovercraft B/C

Are transistors allowed? ??? There is an FAQ that speaks to this question. See the last FAQ at https://www.soinc.org/hovercraft (Quick answer = not allowed) This is not how I interpreted that FAQ. While it stated "Most transistors are integrated circuits....", I know that many simple NPN and PNP tr...

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