Key to Wentworth & Hill's Text-book of Physics |
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Key to Wentworth & Hill's Text-Book of Physics George Albert Wentworth,George Anthony Hill No preview available - 2018 |
Key to Wentworth and Hill's Text-Book of Physics (Classic Reprint) George Albert Wentworth No preview available - 2017 |
Key to Wentworth & Hill's Text-Book of Physics George Albert Wentworth,George Anthony Hill No preview available - 2015 |
Common terms and phrases
acceleration ampere angle balance ball barometer battery body boiling bottle calories candle cell charge Class-room Exercises collision convex lens copper cork cubic centimeters cubic foot cylinder Daniell cell denote the required density depth distance electricity electrified electroscope equal Explain feet force formula friction fulcrum galvanometer glass grams Hence horizontal horse power inches iron kinetic energy Laboratory Exercises latent heat lens Let x denote Leyden jar liquid liter magnet mass mechanical advantage melting mercury meters miles an hour minute mirror motion moving needle ohms pendulum piece piston placed plane plate pole position poundals pressure raised resistance rise solid Space described specific gravity specific heat steam string surface temperature tons Total momentum tube vapor velocity vertical vessel vibration volts volume weight whence wire wood zinc
Popular passages
Page 142 - The emf of a battery is 18 volts and its internal resistance 3 ohms. The difference of potential between its poles, when they are connected by a wire A, is 1 5 volts, and falls to 12 volts when A is replaced by another wire B.
Page 67 - ... find the specific heat of the nails. 23. Five hundred grams of lead shot at 99° are poured into a calorimeter which weighs 78 grams and contains 300 grams of water at 14°. The temperature of the water rises to 18.5°. The specific heat of the calorimeter is 0.1. Find the specific heat of lead. 24. To find the temperature of a furnace, a copper ball weighing 1 Ib. is put into the furnace, and after some time removed, and dropped into a bucket containing 20 Ib. of water at 15° C. The temperature...
Page 118 - The work done by a force acting obliquely on a moving body is measured by the product of the force and the distance through ivhich the body moves in the direction of the force.
Page 130 - If an electrified piece of metal is made to touch a gold-leaf electroscope, the leaves separate, and, on taking the metal away, they remain separate. But if the electrified metal is only brought near...
Page 65 - How many units of heat are required to raise the temperature of 10 oz. of platinum from 80° to 2,000° ? Ans. 38.88 BTU 2. In order to determine the specific heat of a certain alloy, a piece weighing 12J oz.
Page 21 - A stiff pole, 12 ft. long, sticks out horizontally from a vertical wall. It would break if 20 Ib.
Page 19 - A cord is attached to two fixed points, A and B, in the same horizontal line, and bears a ring weighing 10 Ibs. at C, so that ACB is a right angle ; find the tension in the cord.
Page 54 - We know now that the underlying principle is the same as in a mercurial barometer : it is the pressure of the atmosphere on the surface of the water in the well that pushes the water up into the pump.
Page 21 - up" forces must equal the sum of the "down" forces, FI + F4 must equal F^ + F3 2. The sum of the moments tending to produce rotation in one direction must equal the sum of the moments tending to produce rotation in the opposite direction.
Page 139 - EMF force = 1'1, and an internal resistance = 3. If the poles of the battery are connected by a wire whose resistance = 240, what will be the strength of the current ? What will be the effect on the strength of the current of removing from the battery three of the cells, and replacing them with their poles inverted ? 25.