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akhl

@akhl

Dazzler

Posted: 14 years ago

#81

@Ayeshaa,
I edited my previous post to make it simpler. See again.

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596277

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Posted: 14 years ago

#82

^^ Oh I see:) Thanks so much. I have one last Physics Question which I don't understand at all.

A Physics book is moved once around the perimeter of a table of dimensions 1.0m by 2.0m.

A) If the book ends up at its initial position, what is its displacement?

B) What is the distance travelled?

I don't get how to solve this. Is there even a formula for displacement?

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596277

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Posted: 14 years ago

#83

Originally posted by: akhl
@Ayeshaa,
I edited my previous post to make it simpler. See again.

Aww thanks I just saw it:) Thank you so much:)

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akhl

@akhl

Dazzler

Posted: 14 years ago

#84

@Ayeshaa
A Physics book is moved once around the perimeter of a table of dimensions 1.0m by 2.0m.

A) If the book ends up at its initial position, what is its displacement?

B) What is the distance travelled?

A) Displacement = 0 m

B) Distance = perimeter = 1.0 m + 2.0 m + 1.0 m + 2.0 m = 6.0 m

Note: As I mentioned in a previous post, displacement = final position - initial position
If the book ends up at its initial position, then initial position and final position are equal. Therefore initial position - final position = 0 i.e. displacement = 0

For part b, you have to calculate the perimeter of a rectangle. You can use some other method of finding perimeter if that is easier for you. For example perimeter = 2(a+b)
You will get the same answer.

Edited by akhl - 14 years ago

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596277

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Posted: 14 years ago

#85

^^ Okay, will need to keep that in mind. Thanks so much =)

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596277

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Posted: 14 years ago

#86

Originally posted by: akhl
1. First part: 45 km. Your answer is correct. The question asks distance (not displacement), so direction is not needed.

Second part: 115 km
(Although it is correct to say 45 km from town, the question does not say from town. So better to simply give the current position in terms of marker).

2. Initial position = 260 km
Final position = 175 km
Resultant displacement = 175 km - 260 km = -85 km (Answer)
Note that negative displacement is perfectly valid.

Note:
Resultant (i.e. net or total) displacement is always final position - initial position. Therefore only initial and final positions are important. The intermediate position 150 km is not needed in the calculation.

The 135 km that you calculated is the total distance travelled by John.

Are you sure the units are km and not mi? If mi, then change units in answers to mi.

Yeah the units were in km, sorry for answering this late.

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596277

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Posted: 14 years ago

#87

Socials - - Canadian History

Describe the situation of women in Canada in the years before World War I

--They had very few rights. Their husbands controlled their property, and they were mainly employed as servants or factory workers. They didn't have the right to vote, and were considered as persons under the law.

Explain why Canadiens did not share any enthusiasm for Canada's ties to Britain. Do you think their objections were justified? Explain your answer.

--Canadiens did not share any enthusiasm for Canada's ties to Britain because they were nationalists and they did not consider themselves as British subjects.

If you could add, that would be great, not sure if I've explained this well.

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Posted: 14 years ago

#88

Socials - - Canadian History

This is an activity which I don't get how to do. I have to make a bumper sticker that shows strong bias for or against the policies or events related to Canadian autonomy in the early 1900's.

a) Alaska boundary Dispute

b) French Education Rights

c) Canada's participation in the Boer war.