2 years ago

For a complete vector quantity, what information needs to be given?

Physics

1 answer:

zhenek [66]2 years ago

4 0

The magnitude of the quantity and its direction.

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Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 30.0 mph and half the

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Answer:

Explanation:

Given

Distance to grandmother's house=100 mi

it is given that during return trip Julie spend equal time driving with speed 30 mph and 70 mph

Let Julie travel x mi with 30 mph and 100-x with 70 mph

$\frac{x}{30}=\frac{100-x}{70}$

x=30 mi

Therefore

Julie's Average speed on the way to Grandmother's house $=\frac{100}{\frac{50}{30}+\frac{50}{70}}$

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On return trip

$=\frac{100}{2\frac{30}{30}}=50 mph$

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2 years ago

During which type of collision is none of the energy converted to heat

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This would be typical of an elastic collision.

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Suppose that a sound wave has a wavelength of 12 meters and a frequency of 100Hz. What is the speed of sound

Vesna [10]

Answer:

1200Hz

Explanation:

You would have to multiply 12 by 100 to get the answer.

12 • 100 = 1200 Hz

I hope it helps! Have a great day!

Anygays-

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1 year ago

The thermal expansion of a solid is caused by:

Shkiper50 [21]

Answer:

Explanation:

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