Describe the energy transfers that take place in the following situation: A person starts a lawn mower by pulling on the start cord. The engine spins allowing gasoline to enter it. The spark plug makes a spark, igniting the gasoline and the engine is now running.

Question 7 What is vacuum pressure? "It is the pressure above the atmospheric pressure, measured using a gauge." "It is the pressure below the atmospheric pressure, measured using a gauge." It is the sum of the atmospheric and gauge pressures. It is the pressure of the atmosphere.

a. What is meant by buoyancy and how much is it if a solid object is in liquid fluid.  b. A liquid fluid is in the glass and the glass moves straight at a constant speed, what force acts on the liquid fluid?  c. If the glass rotates at a constant angular velocity, what would the surface shape of the liquid fluid be? d.  If the glass moves with a constant acceleration, what will the shape of the surface of the liquid object be?

For the configuration shown in Figure 5, calculate the weight of the piston if the gauge pressure reading is 70 kPa. 6=1.om ston/ Piston 1.0m Oic (Sp. graisty Figure 5