Any object that has energy has the ability to produce a change in

Apuntes

Any object that has energy has the ability to produce a change in 1. itself 2. the world around it 3. Both itself and the world around it 4. Neither itself not the world around it If the external world does work on a system, the 1. amount of work done on the system has a negative value 2. energy of the system decreases 3. energy of the system increases 4. external world becomes warmer Work is done on an object when a force is exerted on the obkect causing the object to be displaced 1. opposite the direction of the force 2. in a circle 3. perpendicular to the force 4. in the direction of the force In which of the following situations if no work done on a book? 1. carrying the book down the hall 2. dropping the book 3. picking up the book 4. pushing the book across the desk In which of the following sitautions is workd done on a rock by a gravitational force? 1. carrying the rock across the yard 2. dropping the rock 3. picking up the rock 4. pushing the rock across the driveway One definition of__ is " energy transformed per unit time" 1. effiency 2. ideal mechanical advantage 3. mechanical advantage 4. power An ideal machine has an ideal mechanical advantage that is__ the...