Which fieldlines are instantaneously tangent to the velocity vector of flow?

What describes the effect of a material expanding in the directions perpendicular to its direction of compression?

What is the density of water?

What is an upward force exerted by a fluid that opposes the weight of an immersed object?

Why are fan assemblies usually designed with spring isolators?

True or False: Vapour compression used in most household refrigerators is a non-cyclic process.

What is a manometer?

What is a manifold?

What is a lubricating pump?

What is the main purpose of a lubricant?

What is the useful output of an engine at a given moment?