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3 years ago

What is the highest and lowest frequency a human being can hear

1 answer:

6 0

Every person is different. But for a planet-wide overall average that roughly represents all human beings on Earth, the figures usually used are:

from 20 Hz to 20,000 Hz .

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Which one of the following statements concerning kinetic energy is true? a The kinetic energy of an object always has a positive

hodyreva [135]

a The kinetic energy of an object always has a positive value.

Explanation:

The kinetic energy of an object is the energy possessed by an object due to its motion, and it can be calculated as

$K=\frac{1}{2}mv^2$

where

m is the mass of the object

v is its speed

Let's now analyze each statement:

a The kinetic energy of an object always has a positive value. --> TRUE. In fact, the mass of the object is always positive, and the term $v^2$ is always positive as well, so the kinetic energy is always positive.

b The kinetic energy of an object is directly proportional to its speed. --> FALSE. Looking at the formula, we see that the kinetic energy is proportional to the square of the speed, $K\propto v^2$ .

c The kinetic energy of an object is expressed in watts. --> FALSE. Watts is the units for measuring power, while the kinetic energy is measured in Joules, the units for the energy.

d The kinetic energy of an object is a quantitative measure of its inertia. --> FALSE. The inertia of an object depends only on its mass, not on its speed.

e The kinetic energy of an object is always equal to the object’s potential energy. --> FALSE. The potential energy depends on the altitude from the ground, not from the speed, so the two energies can be different.

Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

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3 years ago

The natural enzyme reaction in food slowly breaks it down and eventually causes it to spoil. what 2 things halt this enzyme reac

ollegr [7]

Answer: the answer is storing properly in refrigeration.

Explanation:

4 0

3 years ago

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Suppose (for this statement only), that q is moved from the origin but is still within both the surfaces. The flux through both

o-na [289]

Answer:

-True - True - true - false -false - false

Explanation:

True The flow depends only on the charge into the surface, not on the relative position
True The two vectors are radial, so their relative direction do not changes
True It just depends on the charge inside
False, it only depends on the charge, not on the form from the integration surface
False, because if it has a load inside it can be considered in the center, but if the load is outside the flow lines change direction with respect to the surface
False The flow depends only on the load inside, not on its position

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3 years ago

Mass is a measurement of

lozanna [386]

D is the amount of space object takes up

6 0

3 years ago

On James’s MP3 player, he has 12 sad songs and 40 upbeat songs that he wants to put into playlists. He wants to have the same nu

Anna [14]

Answer:

i would say a) two playlists

hope this helps!

Explanation:

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3 years ago

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What is the highest and lowest frequency a human being can hear​

What is the highest and lowest frequency a human being can hear