A First Course in Physics |
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ammeter amperes angle armature ball beam body calories candle centimeter circuit coil color condensation conductor convex lens copper cylinder Daniell cell density diameter direction distance dynamo earth electric electric charge electroscope equal ether waves exactly exerted experiment fact fall flame flow focal length fork friction galvanic cell galvanometer gases glass gram heat Hence hydrogen increase induced iron kinetic energy Leclanché cell lens Leyden jar lines of force liquid machine magnet mass mechanical advantage mercury metal mirror molecules motion moving needle Ohm's law particles pass pipe piston placed plane plate pole potential pressure produce pull pump QUESTIONS AND PROBLEMS rays reflected resistance rise rotation saturated seen shown in Fig shows solid sound steam substances surface temperature thermometer tion tube vapor velocity vessel vibration numbers volts volume wave length weight wire zinc
Popular passages
Page 392 - And show me how they calculated the initiatory speed of our car?" "Yes, my worthy friend; taking into consideration all the elements of the problem, the distance from the center of the earth to the center of the moon...
Page 21 - Any two bodies in the universe attract each other with a force which is directly proportional to the product of the masses and inversely proportional to the square of the distance between them.
Page 32 - 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 18 - For in § 79 it was shown that if any one force is to have the same effect upon a body as two forces acting simultaneously, it must be represented by the diagonal of a parallelogram the sides of which represent the two forces. Hence, conversely, if two forces are to be equivalent in their...
Page 3 - The meter was intended to be one ten-millionth of the distance from the equator to the north pole, but more careful measurements show that this distance is 10,001,887 meters.
Page 300 - ... the coil is grasped in the right hand in such a way that the fingers point in the direction in which the current is flowing in the wires, the thumb will point in the direction of the north pole of the helix (see Fig.
Page 300 - Fig. 21 , the coil will be found to act in every respect like a magnet, with an N pole at one end and an S pole at the other. This result might have been predicted from the fact that a single loop is equivalent to a flat-disk magnet.
Page 315 - Strength of the Induced EMF The strength of an induced EMF is found to depend simply upon the number of lines of force cut per second by the conductor, or, in the case of a coil, upon the rate of change in the number of lines of force which pass through the coil. The strength of the current which flows is then given by Ohm's ]&w;ie, it is equal to the induced EMF divided by the resistance of the circuit.
Page 118 - Whether, then, a liquid will rise against a solid wall or be depressed by it will depend only on the relative strengths of the adhesion of the wall for the liquid and the cohesion of the liquid for itself. Since mercury does not wet glass...