Physics, 25.03.2020 17:37 lucas2020197

Orion is visible on winter evenings but not summer evenings because of

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Answer from: mathhelppls14

Because it is winter constellation and lies in the day sky during summer

Explanation:

The celestial sphere or the sky above us has been divided in to 88 different areas just like we have countries on Earth. These areas are known as the constellations. In each area when you join the brightest stars you can imagine a pattern. Orion is also one of these 88 constellations and favorite of many astronomers.

All the constellations are not visible through out the year. The reason is revolution of Earth around the Sun. The constellation which lie behind the Sun will appear in the sky in the day time and thus will be invisible to us. While those which appear in the night sky can be seen. Thus, constellations are also seasonal. Some can be seen in winter and some in summer.

Orion is a winter constellation because it appears in the night sky during winter. During summer it appears in the day sky thus can not be seen.

Answer from: liyah1361

Explanation:

A cluster of stars which resembles to any particular shape are called constellations.

In our sky, there are almost 88 constellations which are known to us.

Orion is the one in 88 constellations,

It is visible in winter season.

We cannot see all the constellations in all the seasons.

Answer from: Quest

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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Orion is visible on winter evenings but not summer evenings because of...

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