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Since the veins contain most of the body's blood at any one time do they have a higher blood pressure than any other type of vessel?
Wiki User
∙ 14y ago
No, the arteries have higher blood pressure.
Wiki User
∙ 14y ago
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What is the pressure cooker also called?
A pressure cooker is a cooking vessel that is enclosed with a lid that seals to the pan with a rubber gasket, which cooks at a pressure that is higher than the atmospheric pressure. These cookers are usually made of thick-wall stainless steel or thick aluminum. In the lid is a small vent-hole that contains a pressure-regulating mechanism. Water in the food being cooked will boil and cause a steam build-up in the vessel, which will increase the pressure inside the vessel. The pressure-regulating mechanism on the vent-hole will allow some steam out if pressure exceeds a certain limit (usually around 15 psi, or 15 pounds per square inch), thus maintaining a more or less constant pressure inside the pressure cooker that is higher than atmospheric pressure. Since the boiling point increases with higher pressure (for example, water boils at 100 degrees C at atmospheric pressure but it will boil at a higher temperature inside a pressure cooker since the pressure inside is higher), the temperature inside a pressure cooker can rise more than it would have in an open-enclosure pan. Because of the higher temperature, meat becomes soft easily and food cooks faster causing less loss of nutrients. Pressure cookers often have various safety mechanisms to prevent the buildup of excessive pressure and exploding. After cooking is finished, it is important to release the steam slowly first, because if the lid is opened suddenly, a large amount of steam escaping can cause scalding. Many pressure cookers have special mechanisms for controlled steam release before opening the lid.
What are pressure vessels designed to hold?
A pressure vessel is a closed container designed to hold gases or liquids at pressures substantially different from ambient pressures. The pressure vessels need to keep the liquids and gases at a pressure where they can be stored properly since the outside pressure of the atmosphere might not be able to properly store the gas or liquid.
What are Pressure cooker. it is boiler or not?
no, it is not a boiler. pressure cookers are pots that use pressure to cook food. now where there is pressure, there is heat. It's simple science. The heat then cooks the food. happy cooking!!added answer: pressure does not cause heat. Pressure simply allows the boiling point of the liquid to be higher since boiling point increases with the increase of pressure. A higher boiling point causes faster cooking.
How do pressure cookers work and are they really much quicker?
Pressure cookers work because when you increase pressure, water boils at a higher temperature. Water normally boils at 212 degrees F. Under 15psi of pressure (standard in a pressure cooker), it boils at 257 degrees F. Since your food is cooking at a higher temperature, it will cook faster.
How does air pressure change with increased altitude?
since there is less gravity when you go higher in the atmosphere, there is less air being pulled down and causes the reduce of air pressure.
What does pressure have to do with speed of particles?
Basically, pressure is just a way to quantify the overall effect of many particles colliding with the side of a container. Each collision of particle and container transfers a force into the container. When particles have a higher speed they cause more acceleration and therefore more force into the container. Since pressure is the force per unit area, when the force increases, so does the pressure. So basically, the higher the particle speed, the higher the pressure.
Is fuel consumption for bulk carriers same as for container ships?
Fuel consumption is dependant on the power required to operate the ship. This is a function of the vessels design speed and resistance or drag. A container vessel travels at much higher speeds than a bulk carrier and since an increase in speed will lead to a cubed increase in fuel consumption, it takes a lot more fuel to travel at this higher speed. However, the drag of a bulk carrier is much higher than that of a container vessel of the same dimensions since the container vessel has much finer lines under water. Basically, if the two vessels are travelling at the same speed then the container vessel will consume less fuel but since containers vessels are suppposed to travel at twice the speed of a bulk carrier. the bulk carrier in practice consumes less fuel providing the two ships are the same size,
Who invented Pressure Cooker?
A pressure cooker is an enclosed cooking vessel -- with a lid that seals to the pan with a rubber gasket that cooks at a pressure that is higher than the atmospheric pressure. They are usually made of thick wall stainless steel or thick aluminum. The lid contains a small vent-hole that contains a pressure-regulating mechanism. Water in the food being cooked will boil and cause a steam build-up in the vessel which will increase the pressure inside the vessel. The pressure-regulating mechanism on the vent hole will vent some steam out if pressure exceeds certain limit (usually around 15 psi or 15 pounds per square inch) and thus maintain more or less a constant pressure inside the pressure cooker that is higher than atmospheric pressure. Since boiling point goes up with higher pressure (for example, water boils at 100 degrees C at atmospheric pressure but it will boil at a higher temperature inside a pressure cooker since the pressure inside is higher), the temperature inside a pressure cooker can rise more than it would have in an open-enclosure pan. Because of the higher temperature, meat becomes soft easily and food cooks faster causing less loss of nutrients. Pressure cookers often have various safety mechanisms to prevent it from building up excessive pressure and exploding. After cooking is finished, it is important to release the steam slowly first -- because if the lid is opened suddenly, a large amount of steam escaping can cause scalding. Many pressure cookers have special mechanisms for controlled steam release before opening the lid.
What are the names of the upper and lower blood pressure readings?
Blood pressure is the pressure of what the blood exerts on the walls of the blood vessels. The pressure, that the blood exerts on the wall of the blood vessel, depends on the the heart. When the heart (ventricles) contract, the blood is forced out and into the arteries. Since the blood it forced, the pressure is high. That gives you the higher reading, and it is called SYSTOLE. When the heart relaxes between contractions, blood is not forced into the artieries. But, the elastic walls of the arteries - which were streched by the force of the contraction before -, recoils, applying the pressure to the blood. That way the the blood keep flowing. Since this pressure is less then the pressure what the contraction gives, the reading will be lower. That lower reading is called DIASTOLE.
Why high pressure needed in autoclave?
To sterilise effectively the water in the autoclave needs to reach a temperature of 120°C. Since water at atmospheric pressure boils at 100°C, a higher pressure is needed to reach that temperature.
How does the pressure of an enclosed gas change with increasing temperature?
If pressure increases, the volume will decrease P = 1/V or PV = constant
Does the altitude affect bouncing a basketball?
Yes, the higher the altitude the higher pressure on the outside of the ball and so the greater the tension of the ball since the particules inside will be pushing out. Therefore it will bounce better.
