Sir Galahad is attacking the castle of Dunkirk. His engineers design a battering ram to break down the front door of this formidable fortress. If the ram’s mass is 1000kg and the maximum velocity it can attain is 5 m/s, what is the maximum kinetic energy that the ram can apply to the door?

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge