A38 kg girl and a 8.2 kg sled are on the frictionless ice of a frozen lake, 15 m apart but connected by a rope of negligible mass. the girl exerts a horizontal 4.2 n force on the rope. what are the acceleration magnitudes of (a) the sled and (b) the girl? (c) how far from the girl's initial position do they meet

The air that we breath is made mostly of which gaseous molecule

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.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?