##\sin## and ##\cos## are the basic trignometric functions sine and cosine. Although there's no substitute for a proper high-school level textbook (this subject is usually covered after a second year of algebra and a year of geometry) googling for "intro to trig" will find enough to get you started.DirtMonster said:But idk what is sin and cos means
Pressure is the force applied per unit area on an object. It can affect objects in different ways depending on the type of pressure. For example, air pressure can cause objects to float or sink, while water pressure can crush objects due to its weight.
Gravity is a force that pulls objects towards each other. It plays a major role in creating pressure on objects, especially when they are submerged in fluids. Gravity causes the weight of the fluid above an object to push down on it, creating pressure.
Pressure increases with depth due to the weight of the fluid above it. This is known as hydrostatic pressure. The deeper an object is submerged, the greater the pressure it experiences.
Pressure is typically measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa). Instruments such as barometers, manometers, and pressure gauges can be used to measure pressure.
Pressure is used in many everyday applications, such as in scuba diving, hydraulic systems, and weather forecasting. It is also important in maintaining the balance of fluids in the human body, as well as in industrial processes such as food and beverage packaging.