Question

Which of the following options cannot be a cyclic process?

All alternatives are cyclic processes

Isothermal Compression - Isochore Pressure Increase - Isothermal Expansion - Isochore Pressure Reduction

Isothermal Compression - Isobar Expansion - Isothermal Expansion - Isochore Pressure Reduction

Isothermal Compression - Isochore Pressure Increase - Isobar Expansion - Isothermal Expansion

Isobar Compression - Isocore Pressure Increase - Isobar Expansion - Isocore Pressure Reduction

Isobar compression - isothermal compression - isobar expansion - isothermal expansion

Isothermal compression - adiabatic compression - isothermal expansion - adiabatic expansion

A carousel has the shape of a circular disc with radius 0.9m and mass 40kg. The carousel rotates at 2 revolutions per second. A child cups on the carousel at the very edge. The carousel and children then rotate at 1 rpm. What is the child's mass?

• 13kg
• 36kg
• 20kg
• 44kg
• 40kg
• 30kg

We have 1.0 kg of water that holds 80ºC. We add ice at 0ºC. At thermal equilibrium, we only have water that holds 0ºC. How much ice was added? (Use specific heat capacity for water
4184J / (kgK), specific heat capacity for ice is 2050J / (kgK), specific melting heat for ice is 334⋅103J / kg)

• 1,0kg
• 0,77kg
• 1,3kg
• 1,6kg
• 2,0kg
• 0,50kg
• 0,80kg

Answer 1