Here are a number of statements that are either correct or incorrect. Answer by clearly state whether the statement is c

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Here are a number of statements that are either correct or incorrect. Answer by clearly state whether the statement is correct or incorrect. Give a very short motivation / explanation to your answer.
1. The one-time loss (pressure drop) when inflowing into a container always corresponds to 1 dynamic pressure.
2. An increase in speed in a pipe reduces the friction factor.
3. At ε/ d = 0 (relative pipe roughness), no pressure losses are obtained when flowing in pipes.
4. Atmospheric pressure affects the theoretical suction height