300 Level Survey and Geoinformatics Department exam questions and detailed answers. Download the answers in document format. Correct, detailed, and straightforward answers.
Questions:
a) The formula \( d = m^* – (M^* – M) – Mr/R \) is used to compute the chart datum at the new gauge. State the meaning of each parameter in the formula.
b) When sounding datum cannot be established from existing benchmarks, it may be obtained by water transfer. Is this statement true? Comment! What are the requirements needed for obtaining the water transfer?
c) What is position fixing in hydrographic surveying? List various ways of establishing a sounding datum during hydrographic operations.
![A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A quantity of hot water at 100ºC is added to 400g of water at 10ºC until the temperature of the mixture is 60ºC. Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg-1 K-1]")
