符合国情
发表于 2025-3-28 18:37:43
The Spinning Top,In this chapter we will study the motion of a spinning top—the well known children’s toy. From the physical point of view we can represent it as a symmetric rigid rotor in a homogeneous gravitational field. Let . be the point at the tip of the top.
Presbycusis
发表于 2025-3-28 20:54:49
Heat Flow Problems,The heat flow problems are a very important part of thermodynamics. The solution of these problems influences many other technical problems. The most important equation describing heat flow rules, is the heat equation (Fourier equation)
谄媚于人
发表于 2025-3-28 23:51:34
Heat Capacity of System of Bose Particles,In this chapter we will study a system of Bose particles with nonzero mass, (for example He.), in low temperature near absolute zero, when an interesting effect of superfluidity, (or also superconductivity for electrons) appears.
截断
发表于 2025-3-29 07:06:39
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Emg827
发表于 2025-3-29 08:20:21
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eucalyptus
发表于 2025-3-29 13:16:24
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一起平行
发表于 2025-3-29 16:34:58
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nettle
发表于 2025-3-29 20:40:20
Trajectory of a Spinning Tennis Ball,s the direction of the axis of rotation and magnitude . = .(.)..(.), where .(.) is an angle of rotation). We will impose a Cartesian coordinates system (.) on the surface of the earth with the . axis directed vertically.
surmount
发表于 2025-3-30 02:30:22
The Illumination Problem,es of the lamps are (0, ..) and (s, h.) where . is the horizontal distance between the two light sources. Let . = (x, 0) be a point on the road somewhere between the two lights. In this chapter we will look for a point . which is minimally illuminated. In Figure 3.1 we have made a sketch of the situation we will refer to later in this chapter.
atopic
发表于 2025-3-30 04:08:33
Mirror Curves,int of the position of the first ball. Point . moves as we move point . along the boundary of the billiard cushion shape, (see Chapter 7, Figure 7.2). . traces a ., which depends on the change of the tangent line at point T. This mirror curve is dependent on the position of point . and the shape of the billiard cushion.