Hello Paige,
Question - Please select the word from the list that best fits the definition Fossils up to 75,000 years old can be dated with ______.
Answer - Carbon 14
Explanation :
Conduction : Conduction is the transfer of heat due to collision between the molecules in the substance.
It is the way of energy transferred in the solid.
Convection : When air is heated and then travels away from the source that means air caries the heat along.
it is called convection.
It is the way of energy transferred in the air and liquid.
Radiation : radiation generate from the emission of electromagnetic wave.
electromagnetic wave carry the energy away from the source which is emitting the radiation.
It is the way of energy transferred in the vacuum.
i think the best answer for this question is B)
Answer:
The unknown frequency is either 438 Hz or 442 Hz.
Explanation:
The frequency of a beat heard when two sounds with frequencies f₁ and f₂, are played simultaneously, is simply the difference between two frequencies.
b = |f₁ - f₂|
b = 2 Hz
f₁ = 440 Hz
f₂ = ?
440 - f₂ = 2 or 440 - f₂ = -2
f₂ = 438 Hz or 442 Hz
The unknown frequency is either 438 Hz or 442 Hz.
Hope this Helps!!!
