Aballoon is filled with water. the balloon is heated and begins to expand. the water inside begins to turn into steam. what will happen to the mass of the balloon?

Identify two factors that determine the rate of stream erosion

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z