When water is boiled under a pressure of 2.00 atm, the heat of vaporization is 2.20×10^6 j/kg and the boiling point is 120 c. at this pressure, 1.00 kg of water has a volume of 1.00×10^−3 m3, and 1.00 kg of steam has a volume of 0.824 m^3.(a)compute the work done when 1.00kg of steam is formed at this temperature(b)compute the increase in internal energy of the water.

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v