Physics, Theoretical and Descriptive

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Page 5 - The loss of weight of a body immersed in a fluid is equal to the weight of the displaced fluid, or a body immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by it.
Page 57 - The second law asserts that the rate of change of momentum of a body is proportional to the force acting upon the body and is in the direction of the applied force.
Page 33 - The moment of a force about any point is the product of the magnitude of the force and the perpendicular distance from the point to the line of action of the force.
Page 149 - This relation is commonly stated as the Law of Reflection: — The angle of incidence equals the angle of reflection...
Page 113 - British thermal unit (BTU) is the. amount of heat required to raise the temperature of 1 pound of water 1° F.
Page 218 - The International Ohm is the unit of resistance and is defined as the resistance offered to an unvarying current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, 106.300 cm.
Page 22 - Boyle's law— the volume of a given mass of gas at a constant temperature is inversely proportional to the pressure to which it is subjected; or Pi Vi = Pa V2.
Page vii - The mutual attraction between two bodies varies directly as the product of their masses, and inversely as the square of the distance between their centers of mass.
Page viii - ... distance from the center of the earth to the center of mass of the dumbbell.
Page 101 - Temperature. — The temperature of a body is its thermal state considered with reference to its power of communicating heat to other bodies.

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