What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche?
2 answers:
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Answer:
The time required by the impulse to travel from foot to brain equals 0.019 seconds
Explanation:
For uniform motion the distance, speed, time are related by the equation
In our case since the person is 1.90 meters tall so the nerve impulse will have to cover a distance of 1.90 meters at a speed of 100 m/s.
Hence the time required for the impulse to travel from foot to the brain can be calculated as
Answer:
79·433 × W/m²
Explanation:
Given intensity of sound in decibels is 19
Formula for intensity of sound in decibels is
<h3>where
is the intensity of sound measured in decibels
I is the intensity of sound measured in W/m²
is the intensity of the sound that is taken as standard and it's value is equal to
W/m²
By applying the formula
19 = 10 × ㏒(I ÷ )
⇒ 1·9 = ㏒(I ÷ )
⇒ antilog(1·9) = I ÷
⇒ 79·433 = I ÷
⇒ I = 79·433 × W/m²
∴ Intensity of sound = 79·433 × W/m²