As air mass cools, water will condense when: a) the humanity reaches the dew point. b) the relative humidity equals the standard humidity. c) the air pressure reaches the atmospheric pressure. d) the temperature reaches the dew point.

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

If you put a helium-filled balloon in the refrigerator, what will happen?