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Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 199456 times)

Offline xMilishax

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #555 on: May 10, 2010, 02:51:52 pm »
Quote from: thenewkid™ on May 10, 2010, 02:46:47 pm
m/j 2006 p6 q 5a
Thanks

You can draw a diagram showing two equal heights from the bench.
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Offline thenewkid™

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #556 on: May 10, 2010, 02:53:33 pm »
Thanks
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Offline Shazizzzle

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #557 on: May 10, 2010, 02:54:36 pm »
Quote from: thenewkid™ on May 10, 2010, 02:46:47 pm
m/j 2006 p6 q 5a
Thanks

Umm, you use set squares. Those triangle thingys in your geo box, if you don't know that they are.
Place one in between the stand on the left and the metre rule, and on between a stand you add on your own somewhere in the middle and the metre rule, or between the metre rule and the stand on the left.
The set squares should show a perfect, exact fit at the corners, proving they are 90 deg. and this exactly horizontal.
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Offline xMilishax

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #558 on: May 10, 2010, 02:54:59 pm »
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Offline Dr.virus007™

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #559 on: May 10, 2010, 02:55:35 pm »
A research ship uses an echo-sounder to locate a shoal fish .It receives back an echo 37.1 ms after a sound is transmitted .Work out the depth of the shoal below the ship.(speed of sound in water=1400 m/s).
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Offline Shazizzzle

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #560 on: May 10, 2010, 02:55:48 pm »
*thus
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Offline Malak

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #561 on: May 10, 2010, 02:57:24 pm »
Quote from: Baladya on May 10, 2010, 02:42:11 pm
The purpose is to change the resistance...

Hey does it matter if the voltmeter is up or down?? No rite...it jst has to b parallel?
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Offline PeaceMaker

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #562 on: May 10, 2010, 02:58:02 pm »
"How do you calculate the rise and fall of a temperature?  Also, Question 1, Q.3B, 4B how do you take the measurements?,   2009 OCT/NOV, i can't seem to understand what to do exactly. Also, what to do when you are asked to draw to rectangular blocks to measure something?

Thats all of my doubts of paper 6. Went through 2003 - 2009 and found that these are my problems."

This is my post, i hope most of it gets answered, thanks :D
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Offline thenewkid™

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #563 on: May 10, 2010, 02:58:41 pm »
Quote
A research ship uses an echo-sounder to locate a shoal fish .It receives back an echo 37.1 ms after a sound is transmitted .Work out the depth of the shoal below the ship.(speed of sound in water=1400 m/s).

use speed=d/t
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Offline haris94

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #564 on: May 10, 2010, 02:58:47 pm »
Quote from: ang3l on May 10, 2010, 02:57:24 pm
Hey does it matter if the voltmeter is up or down?? No rite...it jst has to b parallel?

nope, doesn't matter
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Offline Adzel

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #565 on: May 10, 2010, 02:59:26 pm »
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Offline Adzel

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #566 on: May 10, 2010, 03:00:46 pm »
Quote from: Adzel on May 10, 2010, 02:43:01 pm
Can you draw both diagrams please...

Thanks in advanced
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Offline Fastal

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #567 on: May 10, 2010, 03:01:02 pm »
Quote from: Dr.virus007™ on May 10, 2010, 02:55:35 pm
A research ship uses an echo-sounder to locate a shoal fish .It receives back an echo 37.1 ms after a sound is transmitted .Work out the depth of the shoal below the ship.(speed of sound in water=1400 m/s).

s=d/t
1400=d/0.371s
d=519.4

since the sound goes to and back
divide by 2
519.4/2=259.7

thus its 260 meters
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Offline Adzel

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #568 on: May 10, 2010, 03:02:46 pm »
Its better to use speed = 2d/t
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Offline Dr.virus007™

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #569 on: May 10, 2010, 03:02:57 pm »
giv me the answer.........
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