Physics, 24.03.2020 05:25, pison3163

Which of the following statements are true? Check all that apply. A satellite's motion is independent of its mass. The launch speed of a satellite determines the shape of its orbit around Earth. A geosynchronous satellite has a period of approximately 28 days. A satellite's velocity and orbital radius are independent of each other.

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answered: drashanhparekh123

A satellite's motion is independent of its mass.

The launch speed of a satellite determines the shape of its orbit around Earth.

Explanation:

When a satellite is launched into the space, the centripetal force required to keep the satellite in its orbit is provided by the gravitational force of the Earth.

That means, Fc=Fg ........ (1), where is centripetal force and is gravitational force.

Therefore, $\frac{mv^{2}} {r}=G\frac{Mm}{r^{2} }$ .......... (2), where is the mass of the satellite, is the mass of the Earth, is the distance of the satellite from the center of the Earth (radius of the orbit or orbital radius), is the orbital velocity of the satellite and is the universal gravitational constant (6.673 x 10-11 Nm²/kg²).

From equation (2), $v^{2} =\frac{GM}{r}$ and

$v=\sqrt{\frac{GM} {r}}$ ........... (3)

From equation (3), it is clear that the satellite's motion i.e., its orbital velocity is independent of its mass and depends on the mass of the Earth, the distance of the satellite from the center of the Earth (orbital radius).

A satellite that has the same orbital period as that of the Earth (moves around the earth every 23 hours 56 minutes and 4 seconds) is known as a geosynchronous satellite. The position of such satellites appears stationary with respect to a ground station since it is in a geosynchronous orbit.

The satellites are projectiles that are acted upon by the gravitational force. A satellite that launched with sufficient speed would orbit the earth. If the launch speed of the satellite is very small, it will fall into the earth. If it is launched with sufficient speed, the satellite will stay above the earth and orbit in a circular path. If the launch speed of the satellite is very high, it will orbit the earth in an elliptical path.

answered: Guest

Is a vector quantity that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

answered: Guest

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

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Which of the following statements are true? Check all that apply. A satellite's motion is independen...