Context: Context: A force defined by 𝐹 = 𝛼𝑡2 + 𝛽𝑡 acts on a particle at a given time t. The factor which is dimensionless, if 𝛼 and 𝛽 constants, Is.1. 𝛼𝛽2. 𝛼 𝛽𝑡3. 𝛼 𝛽𝑡4. 𝛽𝑡𝛼 Answer question Answer question
Question
Context: Context: A force defined by 𝐹 = 𝛼𝑡2 + 𝛽𝑡 acts on a particle at a given time t. The factor which is dimensionless, if 𝛼 and 𝛽 constants, Is.1. 𝛼𝛽2. 𝛼 𝛽𝑡3. 𝛼 𝛽𝑡4. 𝛽𝑡𝛼 Answer question Answer question
Solution
Para determinar cuál de los factores es adimensional, primero debemos analizar las dimensiones de 𝛼 y 𝛽 en la ecuación de la fuerza 𝐹 = 𝛼𝑡² + 𝛽𝑡.
La fuerza (𝐹) tiene dimensiones de [M][L][T]⁻² (masa, longitud, tiempo al cuadrado inverso).
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Para el término 𝛼𝑡²:
- 𝑡 tiene dimensiones de [T].
- 𝑡² tiene dimensiones de [T]².
- Entonces, 𝛼 debe tener dimensiones de [M][L][T]⁻⁴ para que 𝛼𝑡² tenga dimensiones de [M][L][T]⁻².
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Para el término 𝛽𝑡:
- 𝑡 tiene dimensiones de [T].
- Entonces, 𝛽 debe tener dimensiones de [M][L][T]⁻³ para que 𝛽𝑡 tenga dimensiones de [M][L][T]⁻².
Ahora, evaluamos las opciones dadas:
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𝛼𝛽²:
- Dimensiones de 𝛼: [M][L][T]⁻⁴.
- Dimensiones de 𝛽: [M][L][T]⁻³.
- Dimensiones de 𝛽²: ([M][L][T]⁻³)² = [M]²[L]²[T]⁻⁶.
- Dimensiones de 𝛼𝛽²: [M][L][T]⁻⁴ * [M]²[L]²[T]⁻⁶ = [M]³[L]³[T]⁻¹⁰ (no es adimensional).
-
𝛼𝛽𝑡³:
- Dimensiones de 𝛼: [M][L][T]⁻⁴.
- Dimensiones de 𝛽: [M][L][T]⁻³.
- Dimensiones de 𝑡³: [T]³.
- Dimensiones de 𝛼𝛽𝑡³: [M][L][T]⁻⁴ * [M][L][T]⁻³ * [T]³ = [M]²[L]²[T]⁻⁴ (no es adimensional).
-
𝛼𝛽𝑡:
- Dimensiones de 𝛼: [M][L][T]⁻⁴.
- Dimensiones de 𝛽: [M][L][T]⁻³.
- Dimensiones de 𝑡: [T].
- Dimensiones de 𝛼𝛽𝑡: [M][L][T]⁻⁴ * [M][L][T]⁻³ * [T] = [M]²[L]²[T]⁻⁶ (no es adimensional).
-
𝛽𝑡/𝛼:
- Dimensiones de 𝛽: [M][L][T]⁻³.
- Dimensiones de 𝑡: [T].
- Dimensiones de 𝛼: [M][L][T]⁻⁴.
- Dimensiones de 𝛽𝑡/𝛼: ([M][L][T]⁻³ * [T]) / [M][L][T]⁻⁴ = [M][L][T]⁻² / [M][L][T]⁻⁴ = [T] (no es adimensional).
Ninguna de las opciones dadas es adimensional. Por lo tanto, parece que hay un error en las opciones proporcionadas.
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