College Physics |
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Common terms and phrases
acceleration ampere angle axis body boiling point Boyle's law called cell centimeter charge circuit coefficient coil color compression condensation conductor constant copper cubic centimeter curve cylinder density diameter direction displacement distance dynes elastic electric equal equation equilibrium expansion film flow fluid force fork friction galvanometer gases glass gram gravity heat Hence horizontal immersed increase joules kilos kinetic energy lens light liquid magnetic field mass measured medium mercury mercury-in-glass thermometer metal mirror molecular molecules moment of inertia parallel particles passes pendulum pipe piston placed plane plate pole position potential pressure prism produced pump quantity radius rarefaction rays refraction resistance rotation shown simple harmonic motion solid solution sound string substance surface tension temperature thermometer tion tube unit velocity velocity of sound vertical vessel vibration viscosity volume wave length weight wire zero
Popular passages
Page 86 - A body immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced by it.
Page 20 - Newton's first law of motion: " Every body continues in its state of rest or uniform motion in a straight line, except in so far as it is compelled to change that state by a force impressed upon it.
Page 87 - ... the ratio of the ovendry weight of a sample to the weight of a volume of water equal to the volume of the sample at some specific moisture content, as green, air-dry, or ovendry.
Page 307 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 309 - The volt, which has the value 10s in terms of the centimetre, the gramme, and the second of time, being the electrical pressure that if steadily applied to a conductor whose resistance is one ohm will produce a current of one ampere, and which is represented by -6974 (•}•$$) of the electrical pressure at a temperature of 15° C.
Page 109 - ... twenty years ago, sought to graft upon this basis a system of psychology ; and two years ago a second and greatly amplified edition of his work appeared. Those who...
Page 211 - ... degrees Centigrade. This unit is called a calorie. In the English system, the British thermal unit (BT u.) is defined as the quantity of heat needed to raise the temperature of one pound of water one degree Fahrenheit. 169. Thermal Capacity of a Body. It may be proven experimentally (Art. 173) that, unless changes of state occur, the quantity of heat added to a body is nearly proportional to the change of temperature produced. Thus if a given body be heated from t^ to £2°, then the heat needed...
Page 325 - Ampere, which is one-tenth of the unit of current of the CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 235 - ... the substance from the solid to the liquid state, without change of temperature. The heat of fusion is therefore a measure of the energy needed to produce this change of state.
Page 116 - ... mysterious chemical facts, and has done more for the rationalization of chemistry than any other of its recent advances. Solutions are no longer liquids in which gases, solids or other liquids have been dissolved. They include mixtures of any of these kinds of matter with any other. They have been defined as "homogeneous mixtures which cannot be separated into their constituent parts by mechanical means, the proportion between the parts being continuously variable between certain limits, with...