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

Physics & Space Science

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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

Physics & Space Science

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.

Rx = Ry<Rz.

B.
Rx<Ry<Rz.

C.
Rx = Ry = Rz.

D.
Rx>Ry>Rz.

E.
Rx<Ry = .

Physics & Space Science

A device that measures absolute air pressure is called a __________

Fill in the blank(s) with correct word

Physics & Space Science

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.

Physics & Space Science