Recent content by Nina stena

Oh is H2 to B 220cm??

Sorry i lost my connection, H2 and H1 have the same distence? Beacuse H1 and H2 have the same hight (220) and the base of the tringel are 30 cm?

rectangle?

Can i just take then the answer from H1-A (-) the distance 220? Sorry for all the trouble but iam really trying. I have not been in school for the past 2 month , ( i got diabetes) So i have missed much.

Hmm the length from the middle to B? or is't 60+30? I really don't know iam trying my best.

H2-B: 60+40=100, 100^2+220^2=58400 root square of 58000= (20) root square of (146)= 214 is that even right? Here is a better picture:

H1-B: When I sketch , I get a triangle , then I can use the Pythagorean theorem . So i get 60^2+220^2=52000 root square of (52000)= (20) root square (130)But if i calculate the first max with the grating equation, will i get the answer?

It helps a bit, but i don't really know how to write it down and get an answer. I have done pretty good job with the othere quesions on this old exam but this question are impossible.

Ohh do you mean i calculated the path to B?Beacuse iam not sure if i calculated the right thing. Oh you mean i calculated the path to B insted of A? And my idea was to use Pythagorean theorem to calculate the path from H1 to A,B and C and then calculate the path from H2 to A,B,C, then compare...

Hey all 1. Two speakers emit sound in phase with the frequency of 13.2 kHz, the sound from the loudspeakers directed at points A , B and C. Rank the volume of the three points with the weakest first. speed of sound 340m/s 2. 3. I think I need to use Pythagoras says to calculate the path...