FreeNotes
In a barometer, the height of the liquid column is determined by the balance between the weight of the liquid column and the atmospheric pressure. The relationship between the height of the liquid column and the density of the liquid is given by the following equation: P=ρgh Where: P is the atmospheric pressure, ρ\rho is … Read more
In space, there is no atmospheric pressure, which can cause body fluids to boil due to low external pressure. The airtight layer of a space suit maintains constant pressure, ensuring astronauts can breathe and preventing their bodies from expanding due to the vacuum. It also protects against extreme temperature variations. Related Questions: How are we … Read more
When air is blown into a balloon, it increases the pressure inside due to compressed air molecules. When tied, the air remains trapped, maintaining internal pressure. The balloon stays inflated because the internal pressure balances with the external atmospheric pressure, preventing air from escaping unless punctured or untied. Related Questions: How are we able to … Read more
A thumb pin has a sharp, pointed end and a wide, flat head. The pointed end has a small surface area, which concentrates force and increases pressure, allowing it to penetrate surfaces with minimal effort. The flat head provides a large area for applying force, making it easy to push in. Related Questions: How are … Read more
Jumping exerts more pressure than standing still because pressure depends on force and area. When jumping, the force increases due to acceleration and impact upon landing. This momentarily increases pressure on the trampoline, causing greater deformation. Standing still distributes body weight evenly, exerting less pressure compared to the impact during a jump. Related Questions: How … Read more
Pascal’s Law: Pascal’s Law states that “The pressure exerted on a confined fluid is transmitted undiminished in all directions throughout the fluid.” This means that when a pressure is applied to a fluid within a confined space, that pressure is distributed equally in all directions. The magnitude of the pressure remains constant throughout the fluid, … Read more
The pressure exerted by a liquid in a container depends on both the depth of the liquid and the density of the liquid. Let me explain how this works and show the relationship step-by-step. Liquid Pressure Formula: The pressure exerted by a liquid at a given depth can be calculated using the following formula: P=ρgh … Read more
Atmospheric Pressure and Altitude: Atmospheric pressure refers to the weight of the air above us. As altitude increases, atmospheric pressure decreases. This happens because the density of air becomes lower as you ascend, and fewer air molecules are present above you to exert pressure. The decrease in pressure is roughly exponential, meaning it drops more … Read more
Atmospheric pressure is the pressure exerted by the weight of the Earth’s atmosphere on a given surface. It is caused by the molecules in the air colliding with surfaces, and it acts in all directions. The atmosphere exerts pressure on everything on Earth’s surface, including people, objects, and even the Earth’s own surface. Unit of … Read more
Pressure is the force applied per unit area on a surface. It quantifies how concentrated a force is on a particular area. The formula for pressure is: Pressure=Force/Area Where: Pressure is measured in pascals (Pa), where 1 Pa = 1 N/m². Force is the force applied on the surface (in newtons, N). Area is the … Read more