What type of energy is found in a volleyball player spiking a ball?
Explanation: Kinetic because the ball is being moved. The other type of energy is potential and potential energy is energy that isn’t being moved.
How do you know if something is kinetic or potential energy?
Energy stored in an object due to its position is Potential Energy. Energy that a moving object has due to its motion is Kinetic Energy. Kinetic Energy: Is energy of motion.
Does a ball have kinetic energy?
The ball will never have as much kinetic energy as it origi- nally had. This elastic potential energy is why the ball is able to bounce, or rebound. After the ball rebounds, the elastic potential energy is transformed into kinetic energy, but it will never possess as much kinetic energy as during its original fall.
Is pedaling up a hill kinetic or potential energy?
A cyclist pedalling up a hill increases their Potential Energy because they are increasing their height above sea level. To do this requires them to generate Kinetic Energy in the form of leg muscle rotation to make the bicycle move forward.
Why is there more potential energy at the top of a hill?
Because mass and gravity are constant for the train, if the height of the train above the ground is increased, the potential energy must also increase. This means that the potential energy for the roller coaster system is greatest at the highest point on the track: the top of the lift hill.
What does Delta H mean?
Enthalpy change
What is enthalpy diagram?
An enthalpy diagram plots information about a chemical reaction such as the starting energy level, how much energy needs to be added to activate the reaction, and the ending energy. An enthalpy diagram is graphed with the enthalpy on the y-axis and the time, or reaction progress, on the x-axis.
How do I calculate enthalpy?
Use the formula ∆H = m x s x ∆T to solve. Once you have m, the mass of your reactants, s, the specific heat of your product, and ∆T, the temperature change from your reaction, you are prepared to find the enthalpy of reaction. Simply plug your values into the formula ∆H = m x s x ∆T and multiply to solve.
What is enthalpy change on a graph?
An enthalpy diagram shows the change in enthalpy of the reaction as the chemicals move from reactants to products. The change in enthalpy is a fancy term for the change in thermal energy of the system at constant pressure. Exothermic means the thermal energy of the products is less than that of the reactants.
How do you read a pressure enthalpy diagram?
On the P-H diagram, pressure is indicated on the y-axis and enthalpy is indicated on the x-axis. Typically enthalpy is in units of Btu/lb and pressure is in units of pounds per square inch (psi). The upside down U figure shown on the diagram designates the points at which the refrigerant changes phase.
What is S in TS diagram?
A temperature–entropy diagram, or T–s diagram, is a thermodynamic diagram used in thermodynamics to visualize changes to temperature and specific entropy during a thermodynamic process or cycle as the graph of a curve. Working fluids are often categorized on the basis of the shape of their T–s diagram.
What is enthalpy and entropy?
Enthalpy is the amount of internal energy contained in a compound whereas entropy is the amount of intrinsic disorder within the compound.
How much voltage can a human body handle?
The human body has an inherent high resistance to electric current, which means without sufficient voltage a dangerous amount of current cannot flow through the body and cause injury or death. As a rough rule of thumb, more than fifty volts is sufficient to drive a potentially lethal current through the body.