Answer for the quiz

  

 I.

1.  A type of energy that cannot be created or destroyed?
   Answer: Heat
2. States that the volume of a gas varies inversely with the pressure?
   Answer: Boyle's Law
3. The most common practical use of the first law of thermodynamics?
   Answer: Heat engine
4. The energy transferred from the object is?
   Answer: Negative work
5. When the object is stationary, its kinetic energy is?
   Answer: Zero

  II. 

1. Being in the wrong place when an African elephant—mass = 6000 kg, velocity = 10 m/s—is charging can really ruin your day. How fast would a 10 kg cannonball travel if it had the same kinetic energy as the elephant?
   
   Solution
   
2. A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 °C is placed inside an oven whose temperature is 50.0 °C. The pressure inside the container at 20.0 °C was at 3.00 atm. What is the pressure of the nitrogen after its temperature is increased to 50.0 °C?
   
   Solution
   
3. A gas has a volume of 800.0 mL at −23.0 °C and 300.0 torr. What would the volume of the gas be at 227.0 °C and 600.0 torr of pressure?
   
   Solution
   
4. If the spring is displaced for 75 cm and the work done to move the spring is --3.3 Joules, Find the spring force
   
   Solution
   
   
   
   
5. A Technician lifted a 1-kg power supply off the ground and it takes 5 seconds to move the power supply from the ground  to the table that has a height of 1.2 meter

       Solution
        the initial position of the power supply is from the ground

          so our initial height is Zero