3 years ago

What makes a force a vector quantity

Physics

1 answer:

klasskru [66]3 years ago

3 0

Answer:

A vector quantity is a quantity that has both magnitude and direction.

Explanation:

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Which of these metals are magnetic?

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If iron, nickle, or cobalt is an answer choice, those are the three metals that are purely magnetic.

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An ant can travel approximately 30 meters per minute. How many meters could an ant move in 45 minutes.

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Answer:

From what I see, it's saying that every minute, the ant can move 30 meters. So how many meter would it move in 45 minutes?

30 meters = 1 min

x meters = 45 min

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3 years ago

Heights of men on a baseball team have a bell-shaped distribution with a mean of 166 cm 166 cm and a standard deviation of 5 cm

kaheart [24]

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95 %

99.7 %

Explanation:

$\mu$ = 166 cm = Mean

$\sigma$ = 5 cm = Standard deviation

a) 156 cm and 176 cm

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$166+5\times 2=176$

From the empirical rule 95% of all values are within 2 standard deviation of the mean, so about 95% of men are between 156 cm and 176 cm.

b) 151 cm and 181 cm

$166-5\times 3 =151$

$166+5\times 3=181$

The empirical rule tells us that about 99.7% of all values are within 3 standard deviations of the mean, so about 99.7% of men are between 151 cm and 181 cm.

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3 years ago