Correct Answer: C. extensive coastines conducive to shipping

Correct Answer: A. Reducing agent

Correct Answer: A. money supply to increase

Correct Answer: C. 81°

Explanation

\(\overrightarrow{x} . \overrightarrow{y} = |\overrightarrow{x}||\overrightarrow{y}|\cos\theta\)

\(\overrightarrow{x} . \overrightarrow{y} = (i - 3j) . (6i + j) = 6 - 3 = 3\)

\(|\overrightarrow{x}| = \sqrt{1^{2} + (-3)^{2}} = \sqrt{10}\)

\(|\overrightarrow{y}| = \sqrt{6^{2} + 1^{2}} = \sqrt{37}\)

\(\therefore 3 = (\sqrt{10})(\sqrt{37})\cos \theta\)

\(\cos\theta = \frac{3}{\sqrt{370}} = 0.1559\)

\(\theta = \cos^{-1} 0.1559 \approxeq 81°\)

Correct Answer: A. seed drilling

Correct Answer: C) all ships are insured separately from the crew

Explanation

The question is asking which of the following statements about sea transport is TRUE. Let's look at each option to determine the correct answer.

Option A states that all ships have specific routes to ply. This means that every ship follows a specific route for its journey. However, this statement is not true because ships can have different routes depending on their destination and the cargo they are carrying. Some ships may have fixed routes, while others can navigate freely.

Option B states that all ships must be insured at every journey. While it is a good practice for ships to have insurance coverage, it is not mandatory for every ship to be insured for every journey. Insurance is usually obtained to protect against potential risks and damages during the journey, but it is not a requirement for every ship.

Option C states that all ships are insured separately from the crew. This statement is true. Ships are typically insured separately from the crew members. Insurance coverage for ships includes protection against damages, accidents, and other risks that may occur during the journey. The crew members may have their own insurance coverage, but it is separate from the ship's insurance.

Option D states that all ships normally arrive at their destination with goods. While it is expected that ships transport goods to their intended destination, it is not always guaranteed. Ships can face various challenges during their journey, such as bad weather, mechanical problems, or other unforeseen circumstances, which may result in delays or even the loss of goods.

Based on the options provided, the correct answer is Option C: all ships are insured separately from the crew. This means that ships and the crew members have separate insurance coverage.

To learn more about sea transport and related topics, please refer to the recommended textbooks.

Correct Answer: D. III and IV

Correct Answer: (C) would have worked

Correct Answer: C. silica and alumina

Explanation

(a)

(b) Terminal velocity is attained when W = U + V