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Fluid Mechanics: Terminal Velocity

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Questions and Answers

What is the unit of viscosity coefficient?

kg/m.s
N.s/m²
Pa.s
All of the above (correct)

What is the condition for a spherical object to reach terminal velocity?

When the velocity is minimum
When the velocity is maximum
When F₁ = F₂ + F₃ (correct)
When F₁ = F₂ - F₃

What is the direction of the buoyant force on a spherical object?

Upward (correct)
Horizontal
Diagonal
Downward

What is the direction of the gravitational force on a spherical object?

Downward (B) Signup and view all the answers

What is the expression for the viscous force (F₃) on a spherical object?

3πrηvt (A) Signup and view all the answers

What is the formula derived by equating the gravitational force, buoyant force, and viscous force on a spherical object?

$\frac{2}{9} \frac{ρ-σ}{η} = \frac{g}{v_t}$ (D) Signup and view all the answers

What is the proportional relationship between the amount of heat produced and the amount of work done in Joule's experiment?

Q = W/J (B) Signup and view all the answers

What is the unit of the mechanical equivalent of heat?

Joules per calorie (D) Signup and view all the answers

What is the purpose of Joule's experiment?

To establish a relationship between the amount of work done and the amount of heat produced (B) Signup and view all the answers

What is the value of the mechanical equivalent of heat?

4.186 joules per calorie (B) Signup and view all the answers

What is the original method used in Joule's experiment to produce heat?

Using a paddle wheel to stir a container of water (D) Signup and view all the answers

What is the unit of the amount of heat produced in Joule's experiment?

Calories (C) Signup and view all the answers

What is the specific heat of the used liquid?

0.65 cal/g°C (A) Signup and view all the answers

What is the specific heat of the iron calorimeter?

0.101 cal/g°C (A) Signup and view all the answers

What is the voltage of the power supply adjusted to?

10 volts (B) Signup and view all the answers

What is the maximum current of the power supply?

2 amperes (C) Signup and view all the answers

What is the purpose of the stirrer?

To ensure the homogeneity of the temperature (D) Signup and view all the answers

What is the formula for the energy supplied?

W = IV (A) Signup and view all the answers