3 years ago

PLS HELP FIND THE AVREGE KENETIC ENERGY!!

Physics

1 answer:

ANEK [815]3 years ago

4 0

Answer: if you gogle it it will tell you the awenser

lanation:

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1. A man walks round a park, first walking north for 80m, then turning right and walking

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The temperature of a solution will be estimated by taking n independent readings and averaging them. Each reading is unbiased, w

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Answer:

68 readings.

Explanation:

We need to take this problem as a statistic problem where the normal distribution table help us.

We can start considerating that X is the temperature of the solution, then

$0.9 = P(|\bar{x}-\mu|$

$0.9 = P(\frac{|\bar{x}-\mu|}{\frac{\sigma}{\sqrt{n}}}$

$0.9 = P(|Z|$

For a confidence level of 90% our $Z_{critic}$ is 1.645

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$\frac{0.1}{\frac{\sigma}{\sqrt{n}}} = 1.645$

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$n=67.65$

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We need to make 68 readings for have a probability of 90% and our average is within $0.1\°\frac$

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2 years ago

What causes the Coriolis effect?

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Correct answer is D. Earths rotation

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