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Chapter 6: Problem 789

Rockets are launched in eastward direction to take advantage of (A) the clear sky on eastern side (B) the thiner atmosphere on this side (C) earth's rotation (D) earth's tilt

Short Answer

Expert verified
Rockets are launched in the eastward direction to take advantage of the Earth's rotation (C), which allows the rocket to benefit from the initial velocity due to the Earth's rotational motion, making it more energy-efficient to reach the desired orbit.

Step by step solution

01

A) The clear sky on the eastern side

The direction of a rocket launch is not determined by the sky's clarity since the weather and sky conditions on Earth can change rapidly, affecting any location. Moreover, rockets typically pass through a very thin layer of the atmosphere, minimizing the impact of weather on their trajectory. Therefore, this option can be excluded.
02

B) The thinner atmosphere on this side

The Earth's atmosphere is relatively uniform in terms of thickness around the globe. The variations in atmospheric density or thinness are primarily determined by altitude, not by the location on Earth. Therefore, this option is not correct.
03

C) Earth's rotation

This option seems to be the most plausible. The Earth rotates from west to east, which means that objects on the Earth's surface are already moving at a significant velocity in the eastward direction due to the Earth's rotational motion. Launching rockets in the eastward direction allows the rocket to take advantage of this initial velocity, making it more energy-efficient to reach the desired orbit. This option appears to be the correct answer.
04

D) Earth's tilt

The Earth's tilt is responsible for the changing seasons throughout the year, as different parts of the Earth receive varying amounts of sunlight based on the tilt angle. However, it does not significantly impact the ideal direction for launching rockets. Therefore, this option can be excluded. Based on the analysis, the correct answer is: (C) Earth's rotation

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Most popular questions from this chapter

Suppose the gravitational force varies inversely as the nth power of distance the time period of planet in circular orbit of radius \(\mathrm{R}\) around the sun will be proportional to (A) \(\mathrm{R}^{[(\mathrm{n}+1) / 2]}\) (B) \(\mathrm{R}^{[(\mathrm{n}-1) / 2]}\) (C) \(\mathrm{R}^{\mathrm{n}}\) (D) \(\mathrm{R}^{[(\mathrm{n}-1) / 2]}\)

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The moon's radius is \(1 / 4\) that of earth and its mass is \(1 / 80\) times that of the earth. If g represents the acceleration due to gravity on the surface of earth, that on the surface of the moon is (A) \(g / 4\) (B) \(\mathrm{g} / 5\) (c) \(\mathrm{g} / 6\) (D) \(\mathrm{g} / 8\)

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