Answer: The heart pumps your blood (cardio), into your lungs (respitory), to give them oxygen. Then it makes itsway around the body to supply oxygen to where it is needed. Then then new blood, without oxygen, goes on the exact same path.
Answer: Your cardiovascular system helps your heart, for example, the better you maintain your cardiovascular system, the healthier your heart is. Your heart helps you breathe, so it supplies the body with oxygen. To breathe however, you need your lungs, nose, mouth, etc. The cardiovascular and respiratory system have to give each other the right components to supply your body with oxygen.
Answer: In earlier days of telephone networks, 48V DC was once found to be suitably high to be able to make telephone work on long telephone lines and still low enough not to cause serious danger if somebody touches the telephone wires. Telephone central offices (exchanges) so started using 48V DC. Even when newer automatic exhanges were setup, they were designed to make use of existing 48V battery sets and arrays which were available with telecom service providers. This legacy design practice has been continued and over many decades all new telecom devices have been designed to work with 48V.The positive grounded or -48V system is also from telephone history. The negative voltage on the line was better than positive to prevent electro-chemical reactions from destroying the copper cable quickly, if cables get wetAns- It is because of cathodic protection. It reduces the sulphation on the battery terminals.
Answer: The law of supply is the tendency of suppliers to offer more of a good at a higher price. There is direct relationship between the price of a commodity and its quantity offered for sale over a specified period of time. When the price of a goods rises, other things remaining the same, its quantity which is offered for sale increases as and price falls, the amount available for sale decreases. This relationship between price and the quantities which suppliers are prepared to offer for sale is called the law of supply.
Formula for Law of Supply:
QxS = Φ (Px Tech, Si, Fn, X,........)
Qxs = Quantity supplied of commodity x by the producers.
Φ = Function
Px = Price of commodity x.
Tech = Technology.
S = Supplies of inputs.
Fn = Features of nature.
X = Taxes/Subsidies. Where Tech, Si, Fn and X are constant
Answer: Law Of SupplyWhat Does Law Of Supply Mean? A microeconomic law stating that, all other factors being equal, as the price of a good or service increases, the quantity of goods or services offered by suppliers increases and vice versa.
Investopedia explains Law Of Supply As the price of a good increases, suppliers will attempt to maximize profits by increasing the quantity of the product sold.