Elaborate on what can be learned about the properties by the location of element on the periodic table. Use atomic number 13 as
2 answers:
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Answer:
The magnitude of the vector clearly doubles if each of its components is doubled.
Explanation:
Answer:
a) 3000 Hz;
b) 30 dB;
c) 1000 times.
Explanation:
a) From the human audiogram given on the figure below the black line represents the threshold for hearing the sound at each frequency. We see that the least intensity is necessary for the frequency of about 3000 Hz.
b) Using the same audiogram we see that we would need the sound of the intensity of about 30dB.
c) The least perceptible sound at 1000 Hz must be 0dB while at 100 Hz it is 30dB. These are logarithmic quantities. To transform them to the linear quantities we use the formula
where is the hearing threshold at 1000 Hz.
Therefore we have the following
is the threshold at 1000Hz and
is the threshold at 100Hz.
By exponentiating we have
Now dividing these two equations we get
Therefore, the least perceptible sound at 100Hz is 1000 times more intense than the least perceptible sound at 1000Hz.
Note: I got these values unisng the audiogram that is attached here. The one that you have might be slightly different and might yield different answers.
The answer is .
- A particle or an item that is in motion has a sort of energy called kinetic energy. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
- Kinetic energy comes in five forms: radiant, thermal, acoustic, electrical, and mechanical.
- The energy of a body in motion, or kinetic energy (KE), is essentially the energy of all moving objects. Along with potential energy, which is the stored energy present in objects at rest, it is one of the two primary types of energy.
- Explain that a moving object's mass and speed are two factors that impact the amount of kinetic energy it will possess.
Determine the escape speed for the rocket from the planet-satellite system:
The potential energy of the rocket due to Ganymede when it is on the surface of the Ganymede is,
The potential energy of the rocket due to Jupiter
when it is on the surface of the Ganymede is,
Here, R is a separation between Jupiter and Ganymede.
To escape from the surface of Ganymede potential energy of the rocket due to Jupiter and Ganymede is equal to the kinetic energy of the rocket.
To learn more about kinetic energy, refer to:
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