<span>D. 80 degrees.
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The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the middle ear. The 8th nerve in the inner ear actually converts the mechanical energy to electrical energy for transmitting to the brain. A membrane called the tympanic membrane separates the middle ear from the outer ear. Whenever a sound reaches the ear, it creates a sound wave that creates vibration in the eardrum. The pressure when high pushes the membrane inwards while low pressure sound waves helps the eardrum to come outwards.
Answer:
179.3 cells
Explanation:
The lamp requires a current of 60W/220V = 0.273A
The dry cells each have an internal resistance of 1Ω.
The number of cells required in series equals 220V divided by the cell's voltage minus their internal voltage drop under a load current of 0.273A.
= 220V/(1.5V–1Ω*0.273A)
=179.3 cells
B) toy train 3 travels 100 cm in 30 seconds
Honking to protest another drivers actions. lol it's considered road rage, which is aggressive driving. Good luck on your driving test! :)
