Physics (Google eBook)

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Scott, Foresman and Company, 1910 - Physics - 414 pages
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Page 26 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Page 65 - To every action there is always an equal and contrary reaction ; or the mutual actions of any two bodies are always equal and oppositely directed.
Page 27 - Gravitation states that every particle in the universe attracts every other particle with a force that is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Page 92 - 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 84 - We took then a long glass tube which by a dexterous hand and the help of a lamp was in such a manner crooked at the bottom that the part turned up was almost parallel to the rest of the tube...
Page 268 - Why the image is seen as far behind the mirror as the object is in front of it.— Let AB be an arrow held Fig.
Page 167 - If now, we look along the wire in the direction in which the current is flowing, the magnetic field is whirling around the wire in the direction we would turn down a right-hand screw.
Page 81 - Pascal's law, which states that "a pressure exerted on a confined liquid is transmitted undiminished in all directions and acts with equal force on all equal areas.
Page 45 - The torque of an engine shaft, or other rotating element, is its turning moment, which is measured by the product of the force and the perpendicular distance from the axis of rotation to the line of action of the force. The customary units of torque are the pound-foot, or the pound-inch.
Page 85 - 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 = P^ Vz.

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