grotto
发表于 2025-3-25 17:11:49
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取之不竭
发表于 2025-3-25 22:40:32
Managerial Capitalism in RetrospectThe expenditure of work to produce heat, as in Joule’s experiment (Chap. 10) is a commonplace achievement. It is also a familiar nuisance in many cases involving friction.
Absenteeism
发表于 2025-3-26 04:03:32
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清醒
发表于 2025-3-26 05:40:05
We are now reaching an important milestone—the beginning of electrical science. In these pages, the subject will be developed, as it was historically, from an initial study of .; this forms the topic of .. (Moving charges exhibit an additional range of phenomena, ., about which more later.)
神经
发表于 2025-3-26 08:57:45
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conspicuous
发表于 2025-3-26 15:04:17
Mehmet Emin Okur,Mehmet Lutfi ArslanWe have just learned how a . field can be . through its effect on an electric current. Conversely, we next learn how a . field is . by an electric current.
过时
发表于 2025-3-26 20:16:15
Measurement,Can Nature be understood on the basis of logic? Physics teaches us that the answer is, to a great extent, “yes,” and that the relevant logic includes a great deal of mathematics. The quantitative laws of physics are expressed by ., whose symbols are directly or indirectly related to ..
系列
发表于 2025-3-26 21:36:00
Motion,Space and time are the arena in which all physical events take place. An object’s position in space will generally change with time; this obvious phenomenon, ., is used as our first clue for deducing the laws of physics. The study of motion is traditionally called ..
SLAG
发表于 2025-3-27 02:22:15
Force,What causes anything to move as it does? This is one of the most fundamental questions of physics, and the science of . has been developed to deal with it; this chapter is an introduction to that subject. In this area our thinking has been shaped almost entirely by one man, Sir Isaac Newton (1642–1727).
indemnify
发表于 2025-3-27 08:07:05
Energy,Energy, like force and motion, is an unspecialized concept, applicable to almost all fields of physics, and providing them with a common unit of measurement. Energy plays a starring role in the most abstract theories as well as in the most practical concerns. Everyone, of course, is aware of its economic, social, and military importance.