In an electric shaver, the blade moves back and forth over a distance of 2.00 mm. The motion is simple harmonic, with frequency
1 answer:
Answer:
(A) 0.001 m
(B) 0.75 m/s
(C)
Explanation:
distance (d) = 2 mm
frequency (f) = 120 Hz
(A) amplitude (A) = half the distance moved by the blade
amplitude = 2 / 2 = 1 mm = 0.001 m
(B) maximum blade speed (v) = ωA = 2πfA
v = 2 x 3.14 x 120 x 0.001 = 0.75 m/s
(c) maximum blade acceleration (a) =
a = =
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Answer:
Gay-Lussac’s law, because as the pressure increases, the temperature increases
Explanation:
First of all, we can notice that the volume of the tank is fixed: this means that the volume of the air inside is also fixed.
This means that in this situation we can apply Gay-Lussac's law, which states that:
"for a gas kept at constant volume, the pressure of the gas is proportional to the absolute temperature of the gas".
Mathematically:
where p is the pressure in Pascal and T is the temperature in Kelvin.
In this case, the tank is filled with air: this means that the pressure of the gas inside the tank increases. And therefore, according to Gay-Lussac's law, the temperature will increase proportionally, and this explains why the tank gets hot.