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Simora [160]
2 years ago
13

In order to waken a sleeping child, the volume on an alarm clock is doubled. Under this new scenario, how much more energy will

be striking the child's ear drums each second?
Physics
1 answer:
Kamila [148]2 years ago
5 0

Answer:4 times more energy will be striking the childbearing

Explanation:

Because Volume is directly proportional to amplitude of sound. Energy is proportional to amplitude squared. If you triple the amplitude, you multiply the energy by 4

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You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at a
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27. (a) What magnification is produced by a 0.150 cm focal length microscope objective that is 0.155 cm from the object being vi
denpristay [2]

Answer:

magnification = - 30

overall magnification = -240

Explanation:

given data

Focal length of microscope objective f = 0.150 cm

Object distance from microscope objective do = 0.155 cm

magnification by eyepiece = 8 ×

to find out

What magnification is produced  and overall magnification

solution

we consider here  Image distance from microscope objective is =  di

so that

Magnification produced by objective will be = - \frac{di}{do}

so we find here  di by given equation that is

\frac{1}{do} +\frac{1}{di} = \frac{1}{f}     ..................1

\frac{1}{di} = \frac{1}{0.150} - \frac{1}{0.155}

di = 4.65 cm

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magnification = - \frac{di}{do}

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and

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3 years ago
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