September 2, Noise-cancelling headphones The noise-cancelling headphones are the headphones that reduce the unwanted ambient sounds using the active noise control engineeringNoise cancellation makes it possible to enjoy the music without raising the volume excessivelyIt can also help a passenger sleep in a noisy vehicle such as an airliner. In the aviation environmentThe noise-cancelling headphones increase the signal-to-noise ratio more than the passive noise attenuating headphones or no headphonesmaking hearing important information such as the safety announcements easierThey can improve listening enough to completely offset the effect of a distracting concurrent activity.
Friction plays a vital role in our daily life. Without friction we are handicap. It is becomes difficult to walk on a slippery road due to low friction. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail. A horse can not pull a cart unless friction furnishes him a secure Foothold.
We can write on a paper or on a board. Friction helps in applying the brakes. It helps in walking on floor. Coffee mug stays on the dashboard 8. Shuffling across a carpet to shock someone 9. Draging of atmosphire with earth is possible Helps to pevents the life on earth by burning astroids.
The main disadvantage of friction is that it produces heat in various parts of machines. Due to friction we have to exert more power in machines. It opposes the motion.
Due to friction, noise is also produced in machines. Due to friction, engines of automobiles consume more fuel which is a money loss. Machine efficency is decreased: Getting shocked by doorknobs 8. It counteracts movement and so it takes more energy to move, it can cause unwanted heat e.
Forest fires are caused due to friction between branches of trees.A comprehensive, coeducational Catholic High school Diocese of Wollongong - Albion Park Act Justly, love tenderly and walk humbly with your God Micah DISADVANTAGES OF FRICTION Despite the fact that the friction is very important in our daily life, it also has some disadvantages like: 1.
The main disadvantage of friction . Despite the fact that the friction is very important in our daily life, it also has some disadvantages like: 1. The main disadvantage of friction is that it produces heat in various parts of machines. Without the advantages of friction, tires wouldn't roll, and people wouldn't walk.
You also wouldn’t hear any sound from stringed instruments like cellos, basses or violins, which is created after rubbing a horse-hair bow against the strings of these musical instruments.
Disadvantages of friction: Friction produces heat which damages the moving parts of a machine. Friction produces wear and tear on the contacting surfaces. This reduces the life of machine parts, tyres and shoe soles.
A lot of energy is wasted due to friction to overcome it before moving. Top 10 Friction Advantages and Disadvantages By Johnni Carlson Posted on July 03, The force of friction Is the force between two surfaces when touched and that affects in the opposite direction of the movement, being considered a resistance.