Questions and Exercises on Stewart's Lessons in Elementary Physics

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Ginn and Heath, 1880 - 188 páginas
 

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Página 136 - 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.
Página 156 - If you press a stone with your finger, the finger is also pressed by the stone. If a horse draws a stone tied to a rope, the horse (if I may so say) will be equally drawn back towards the stone...
Página 178 - The square described on the hypothenuse of a right-angled triangle is equivalent to the sum of the squares described on the other two sides.
Página 92 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.
Página 178 - ... they have an angle of one equal to an angle of the other and the including sides are proportional; (c) their sides are respectively proportional.
Página 138 - When any forces whatever act on a body, then, whether the body be originally at rest or moving with any velocity and in any direction, each force produces in the body the exact change of motion which it would have produced if it had acted singly on the body originally at rest.
Página 167 - The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds.
Página 141 - ... the displacement of the point of application of the force in the direction of the force.
Página 164 - The specific density, or specific gravity, of a substance, is the ratio of its density to that of water at 4° C.
Página 156 - If a body impinge upon another and by its force change the motion of the other, that body also (because of the equality of the mutual pressure) will undergo an equal change in its own motion, toward the contrary part.

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