2 years ago

From

Physics

1 answer:

madreJ [45]2 years ago

4 0

Answer:

From C to D, kinetic energy is transformed into

gravitational potential energy.

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The frequency of light emitted from a source is changed. What visible evidence would indicate this?

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A commuter airplane starts from an airport and takes theroute. The plane first flies to city A, located 175 km away in a directi

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245.45km in a direction 21.45° west of north from city A

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Let's place the origin of a coordinate system at city A.

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rf = ra + rb + rc where ra, rb and rc are the vectors of the relative displacements the airplane has made. If we separate this equation into its x and y coordinates:

rfX = raX+ rbX + rcX = 175*cos(30)-150*sin(20)-190 = -89.75km

rfY = raY + rbY + rcT = 175*sin(30)+150*cos(20) = 228.45km

The module of this position is:

$rf = \sqrt{rfX^2+rfY^2} = 245.45km$

And the angle measure from the y-axis is:

$\alpha =atan(rfX/rfY) = 21.45\°$

So the answer is 245.45km in a direction 21.45° west of north from city A

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What are the two major characteristics that change when air is heated and cooled ? How do these characteristics change the movem

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Two major characteristics that change when air is heated and cooled is the density and the direction of the air flow. They change the movement of the air by heated air rises and cooled air doesn't.

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Recoil speed= 3m/s, method shown in photo

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