She holds a garden hose 5 m above the ground such that the water shoots out horizontally. The water hits the ground at a point 10 m away. What is the velocity in which the water leaves the hose? Given :

Unknown:

Formula:

Solution:

Final

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.