NS2-M3C19 - Buoyancy Quiz 58

Who is responsible for describing buoyant force?

• Archimedes

• Achilles

• Pilates

• Einstein

What happens to a stone with a true weight of 4900 newtons in air, with a volume of half a cubic meter when it is submerged in water displacing 9800 newtons of water?

• It sinks

• It drops one meter and remains suspended

• It disintegrates

• It floats

What happens to a balloon when it reaches an altitude where the upward buoyant force equals the downward weight?

• It falls

• It disintegrates

• It rises

• It remains suspended

If the upward buoyancy and displacement weight of a submarine typically equalizes with two-thirds of the hull submerged, how does it sink?

• Upward buoyancy is increased with weights.

• Displacement weight is increased with water.

• Displacement weight is decreased with air.

A force that opposes the weight of an object in fluid; this force, along with object shape and density, helps keep the object afloat, regardless of what the object is made of or whether the “fluid” is a liquid or a gas; the principle is described by Archimedes' Law.

• Center of gravity

• Center of buoyancy

• Freeboard

• Buoyant force

The measured weight of an object immersed in a fluid; its true weight minus the weight of the displaced fluid.

• Stabilized weight

• Distressed weight

• Transposed weight

• Apparent weight

The quantity per unit volume, unit area, or unit length; the mass of a substance per unit volume.

• Density

• Mass

• Apparent Weight

• Mass Density

The geometric center of the portion of the ship’s hull that is underwater.

• Center of mass

• Center of force

• Center of gravity

• Center of buoyancy

Fillable water tanks used to provide additional weight to vessels. In submarines, a space between the inner and outer hulls filled with water when submerged and with air when surfaced.

• Air tanks

• Water tanks

• Service tanks

• Ballast tanks

Archimedes' Law applies to what substances?

• Solids and gases

• Liquids only

• Solids, liquids and gases

• Liquids or gases