Physics Demystified : A Self-Teaching Guide (Demystified)
Format: PDF / Kindle (mobi) / ePub
YOU DON’T HAVE TO BE A ROCKET SCIENTIST TO UNDERSTAND PHYSICS
Now anyone with an interest in the physical sciences can master physics -- without formal training or drowning in a sea of complicated formulas and equations. In Physics Demystified best-selling author Stan Gibilisco offers a fun, effective, and totally painless way to learn the fundamentals and general concepts of physics.
With Physics Demystified you master the subject one simple step at a time – at your own speed. Unlike most books on physics, general principles are presented first – and the details follow. In order to make the learning process as clear and simple as possible, heavy-duty math, formulas, and equations are kept to a minimum. This unique self-teaching guide offers questions at the end of each chapter and section to pinpoint weaknesses, and a 100-question final exam to reinforce the entire book.
Simple enough for a beginner but challenging enough for an advanced student, Physics Demystified is your direct route to learning or brushing up on physics.
HERE’S EVERYTHING YOU NEED TO:
* Understand the math used in physical science
* Solve mass/force/acceleration problems
* Create mathematical models of physical phenomena
* Perform distance vs. time calculations
* Determine potential and kinetic energy
* Calculate the wavelength of sounds and radio signals
* Understand visible light interference patterns
* Calculate the energy and frequency of a moving particle
* Understand atomic structure
* Learn about electric current, voltage, resistance, power, and energy
Recording tape is the stuff you find in cassette players. These days, mag- netic tape is largely obsolete, but it is still sometimes used for home enter- Coil Permanent Permanent magnet magnet N S N S Applied torque AC output Fig. 14-9. A simple type of ac generator. CHAPTER 14 Magnetism 367 tainment, especially high-fidelity (hi-fi) music and home video. It also can be found in some high-capacity computer data storage systems. The tape consists of millions of particles of
French. This scheme in its earlier form, mks, has existed since the 1800s, but more recently it has been defined in a rigorous fashion by the General Conference on Weights and Measures. The base units in SI quantify displacement, mass, time, temperature, electric current, brightness of light, and amount of matter (in terms of the number of atoms or molecules in a sample). Respectively, the units in SI are known as the meter, the kilogram, the second, the kelvin (or degree kelvin), the
of the rate at which energy is produced, radiated, or consumed. The expression of watts in terms of SI base units begins to get esoteric, as you have been warned: 1 W ϭ 1 kg и m2/s3 PART 1 Classical Physics 156 THE COULOMB The standard unit of electric charge quantity is the coulomb, symbolized C. This is the electric charge that exists in a congregation of approximately 6.241506 ϫ 1018 electrons. It also happens to be the electric charge con- tained in that number of protons,
The speed becomes 9.8067 m/s greater with every second of time that passes. On Mars, this rate of increase would be less. On Jupiter, if Jupiter had a definable surface, it would be more. On the surface of a hugely dense object such as a neutron star, it would be many times more than it is on the surface of the Earth. The rate of gravitational acceleration does not depend on the mass of the object being “pulled on” by gravity. You might think that heavier objects fall faster than slower
how an old-fashioned thermometer works. Solids, in general, expand when the temperature rises and contract when the temperature falls. In many cases you don’t notice this expansion and contraction. Does your desk look bigger when the room is 30°C than it PART 1 Classical Physics 276 does when the room is only 20°C? Of course not. But it is! You don’t see the difference because it is microscopic. However, the bimetallic strip in the thermostat, which controls the furnace or air