2. Amy doesn't want to be late for class so she rushes to McDonalds at lunch. How much time would it take Amy to walk 2km to the restaurant for an apple pie if she walked at a rate of 4.5km/h?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.