## Practical PhysicsGinn, 1922 - 472 pages |

### From inside the book

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**is buoyed up by a force equal to the weight of the displaced liquid**The buoyant force exerted by a liquid is exactly equal to the weight of the displaced liquid . The reasoning is exactly the same , no matter what may be the nature of ... Page 22

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**is buoyed up by a force equal to the weight of the displaced liquid**A floating body must displace its own weight of the liquid in which it floats . This statement is embraced in the statement of Archimedes ' principle , for a body which ...### Contents

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### Common terms and phrases

air pump ammonia amount amperes atmosphere ball barometer body Boyle's law calories cell center of gravity charge circuit coil condenser conductor cooling copper cubic centimeter cylinder density diameter direction distance earth electric electric charge electroscope engine equal exerted experiment fact fall feet force acting freezing friction galvanic cell gases glass gram heat Hence hydrogen inch induced iron kilogram kinetic energy lens lever Leyden jar lifted light liquid machine magnet mass measure mechanical advantage mercury metal meter molecules motion moving needle opposite pass pendulum pipe piston placed plane plate pole position potential energy pounds pressure produced pull pulley QUESTIONS AND PROBLEMS resistance rise rotating shown in Fig shows solid specific gravity speed steam substances surface temperature thermometer tion tube unit valve vapor velocity vessel vibration volume wave length weight wheel wire zinc

### Popular passages

Page 458 - 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 67 - 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 393 - The magnifying power of an astronomical telescope is therefore the focal length of the objective divided by the focal length of the eyepiece. It...

Page 22 - Archimedes stated that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid.

Page 84 - 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 367 - Index of refraction. The ratio of the speed of light in air to its speed in any other medium is called the index of refraction of that medium.

Page 260 - The resistance of any conductor is directly proportional to its length and inversely proportional to the area of its cross section or to the square of its diameter.

Page 60 - ... is, the resultant of two parallel forces acting in the same direction is equal to the sum of the two forces.

Page 62 - 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 2 - Thus, there are 12 inches in a foot, 3 feet in a yard, 5^- yards in a rod, 1760 yards in a mile, etc.