A scuba diver needs more weight in the ocean than in fresh water because salt water is denser than fresh water, making it more buoyant. The additional weight helps the diver sink and maintain a neutral buoyancy underwater.
We have weight and the ocean doesn't. But sort of in a way, if you take the water out of the water, you will find that that it does have weight!
A person who goes into water headfirst is called a diver.
A diver springs from the edge of the ocean with an initial upward velocity of 8 ft/s. How long will it take the diver to reach the water?
a diver
Assuming that by 'amateur diver' you mean a recreational diver without any professional qualificaitions, the recommended limit as determined by PADI (Professional Association of Diving Instructors) is 18m (60ft) for an Open Water diver, 30m (100ft) for Advanced Open Water and 40m (120ft) for a Divemaster. BSAC (British Sub Aqua club) sets the limits as 20m (67ft) for an Ocean Diver, 30m (100ft) for Sports Diver and 50m (165ft) for Master Diver. So in answer to your question, no, you couldn't 'swim where the water pressure is more than 65 ps' unless you were a technical diver or a BSAC qualified diver, as at 165ft the pressure is around 69ps.
The drag force exerted by the water on the diver rapidly decelerates the diver's speed after entering the water. This force opposes the motion of the diver and causes a quick decrease in speed. Additionally, the change in medium from air to water also affects the diver's speed.
Ocean water is approximately 3.5% sodium chloride by weight.
The diver submerged himself in the deep ocean to explore the coral reef.
the weight of the ocean water displaced by the submarine.
The reaction force to Earth's gravity pulling the diver down is the diver pushing back up against the gravitational force, which allows them to jump off the diving board and move upwards momentarily before gravity pulls them back down towards the water.
Two divers are diving in clear ocean water at a depth of 175 m One diver shows a white marker board to the other with writing on it. Thee marker board appear to be blue.