A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the gas rises. This is governed by the __________ law of thermodynamics
Fill in the blank(s) with correct word
first
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Two children seat themselves on a seesaw. The one on the left has a weight of 300 N while the one on the right weighs 200 N. The fulcrum is at the midpoint of the seesaw. If the child on the right is not at the end but is 1.50 m from the fulcrum and the seesaw is balanced, what is the torque provided by the weight of the child on the left? (Take ccw as positive.)
a. –300 N·m b. 300 N·m c. 450 N·m d. –450 N·m e. 150 N·m
Three particles of equal charge, X, Y, and Z, enter a uniform magnetic field 
. X has velocity of magnitude v parallel to the field. Y has velocity of magnitude v perpendicular to the field. Z has equal velocity components v parallel and perpendicular to the field. Rank the radii of their orbits from least to greatest.
A.
B.
C.
D.
E.
.A device that measures absolute air pressure is called a __________
Fill in the blank(s) with correct word
The dominant influence on the length of time a well will produce water is
A) hydraulic conductivity. B) water supply and demand. C) hydraulic gradient. D) aquifer porosity.