a helium balloon has a volume of 5.3l if the volume increases to 10.6l and the pressure decreases to 9.24kPa, what is the initial pressure of the balloon?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

4. a 75.0 g piece of ag metal is heated to and dropped into 50.0 g of water at the final temperature of the mixture is what is the specific heat capacity of silver? 5. a 465 g chunk of iron is removed from petrucci, ralph h.. general chemistry (p. 290). pearson education. kindle edition.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?