3 years ago

What einstein discovered about space and time is that they?

Physics

1 answer:

svp [43]3 years ago

4 0

Einstein's... theory of general relativity predicted that the space-time....

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An airplane pilot wishes to fly directly westward. According to the weather bureau, a wind of 75.0 km/hour is blowing southward.

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Answer:

The speed of the plane relative to the ground is 300.79 km/h.

Explanation:

Given that,

Speed of wind = 75.0 km/hr

Speed of plane relative to the air = 310 km/hr

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We need to calculate the angle

Using formula of angle

$\sin\theta=\dfrac{v'}{v}$

Where, v'=speed of wind

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$\sin\theta=\dfrac{75}{310}$

$\theta=\sin^{-1}(\dfrac{75}{310})$

$\theta=14.0^{\circ}$

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Using formula of resultant speed

$\cos\theta=\dfrac{v''}{v}$

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$\cos14=\dfrac{v''}{310}$

$v''=\cos14\times310$

$v''=300.79\ km/h$

Hence, The speed of the plane relative to the ground is 300.79 km/h.

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Which of the following is the medium which creates oxbows? water wind ice gravity

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have a great day

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