Images produced by a cathode ray tube result from induced emf True or false

A geostationary orbit, also known as a geosynchronous equatorial orbit, is a specific type of circular orbit around the Earth. In this orbit, a satellite's orbital period matches the Earth's rotation period, which is approximately 24 hours. This causes the satellite to appear stationary relative to a fixed point on the Earth's surface, which is why it's commonly used for communication, weather, and broadcasting satellites.

To achieve this, the satellite needs to be at a specific height above the Earth's surface. The altitude at which a satellite will have a period of one day (24 hours) is called the geostationary altitude or the geostationary orbit height.

The calculation to determine this altitude involves using the formula for the orbital period of a satellite:

Where:

- \( T \) is the orbital period (24 hours in this case)

- \( G \) is the gravitational constant

- \( M \) is the mass of the Earth

- \( r \) is the radius of the satellite's orbit (distance from the center of the Earth to the satellite)

Solving for \( r \) with the known values of \( T \), \( G \), and \( M \), you'll find that the satellite needs to be approximately 35,786 kilometers (22,236 miles) above the Earth's surface to have an orbital period of one day.

This altitude allows the satellite to complete one orbit around the Earth in the same amount of time it takes for the Earth to complete one rotation on its axis, effectively staying in the same position relative to a specific point on the Earth's equator.

Penn Foster STudents:  d. upright and smaller than the object.

Answer:

o m

Explanation:

The net displacement is 0 because it returns to its original position. The final position and initial position are the same, so displacement is 0.

Answer:

C. Sharing of the message

Explanation:

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⚘ YourAnswers:

A) Valency is the combining capacity of any element. Valence electrons refers to the electrons found in the outermost shell of the atom of the element.

B) Symbol and valency:

1. Oxygen(O) = (At. no. 8) = -2(Valency)
2. Potassium(K) = (At. no. = 19) = +1(Valency)

C) The reaction would be:

• Reactants = Magnesium and Oxygen
• Products = Magnesium oxide
• Word equation:

━━━━━━━━━━━━━━━━━━━━

Answer:

Oxygen-Symbol-O Potassium Symbol-K