The human body is naturally positively bouyant, as is much of the gear that a diver wears.
Wearing a weight belt (which is basically just a nylon belt with lead weights on it) gives a diver the necessary negative bouyancy to overcome that positive bouyancy. A diver without a weight belt would not be able to swim down more than 2-3 feet, and would constantly pop back up the surface.
Some divers actually have 'weight integrated' systems, rather than using separate stand alone weight belts. But the basic concept is still the same.
Age is not a determining factor. The weight belt should have enoughweight on it to achieve neutral buoyancy for that person and equipment worn.
Yes. It is advisable to use weight belts for back support during weight training, especially if you are lifting heavy weights. As long as you are lifting light and working out for only fitness, you need not bother about belts but if you are a serious/hard core body builder, then a belt is a must for you.
Workout belts and weight training belts are sometimes different but the two are actually pretty much the same thing.
In a tenths situation is when sky divers use decimals.
Weight trimmer belts do not work as directed and offer little benefit to the user. They are designed to stimulate the muscles and contribute to weight loss.
There are weight belts that are used in weightlifting to keep a person from busting apart. Different kinds of belts are used in the area of scuba diving to help a diver better submerge.
For bouyancy calculations, most regulators are assumed to weigh about 4 lbs. For recreational divers, they only carry one regulator, but technical divers may carry four (or more!) regulators on their doubles and various stage tanks.
Shamwow!
Divers use 21% Oxygen and 79% nitrogen while underwater. It results in the same exact air we breath on the surface.
To use it in that form, you could use it as a command. For instance, Dive into the water. To use it in another way, you would have to change the verb tense to "dove" or "diving" or something else like that.
The army of which country?
they need protection from stuff