4 years ago

Why don't you hear a sound when you move your hand back and fourth through the air

2 answers:

5 0

You can't move your hand fast enough, the lowest frequency sound is about 20 cycles per second, if you could move your hand that fast, you might hear sound.

inessss [21]4 years ago

3 0

Your hand is not capable of moving fast enough for sound to come out of it.

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Answer:

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Explanation:

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3 years ago

A jogger hears a car alarm and decides to investigate. While running toward the car, she hears an alarm frequency of 872.10 Hz.

Nata [24]

Answer:

v = 4.18 m/s

Explanation:

given,

frequency of the alarm = 872.10 Hz

after passing car frequency she hear = 851.10 Hz

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speed of the jogger = ?

speed of the

$v_f = \dfrac{872.10-851.10}{2}$

$v_f =10.5\ Hz$

v_o = 872.1 - 10.5

$V_0 = 861.6\ Hz$

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v = 4.18 m/s

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3 years ago

Compare and contrast microscopic and macroscopic energy transfer Give least three comparisons for each

Eduardwww [97]

Answer:

Differences

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macroscopic are substances invisible to naked eye

Similarities

both refer to different scales that are useful to determining the size to different compounds.

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3 years ago

Assuming that the circuit is in the steady state, what is the total energy stored in the two capacitors? j

Neporo4naja [7]

<span>The total energy stored is the sum of the energy stored in the capacitors. If the capacitors are series connected capacitors, then the charging current is the same for both capacitors. This means that each capacitor stores the same energy and the stored energy is two times the energy of any of the capacitors.</span>

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4 years ago

When an object moved in a circle ___ acts to accelerate the object toward the center of that cirlce

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3 years ago

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