Hybrids with exceptional combinations of stiffness and damping. the loss-coefficient-modulus (n- e) chart of figure 3.9 is populated only along one diagonal band. (the loss coefficient measures the fraction of the elastic energy that is dissipated during a load-unload cycle.) monolithic materials with low e have high n, those with high e have low n. the challenge here is to devise hybrids to fill the holes, with the following applications in mind a. sheet steel (as used in to lightly damped flexural vibration. devise a hybrid sheet that combines the high stiffness, e, of steel with high loss coefficient, n. body panels, for instance) is prone car b. high loss coefficient means that energy is dissipated on mechanical cycling. this energy appears as heat, sometimes with undesirable consequences. devise a hybrid with low modulus e and low loss coefficient

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

In physics the desire of an object to keep doing what it is doing is termed?

Chapter 23, problem 075 the figure shows a geiger counter, a device used to detect ionizing radiation (radiation that causes ionization of atoms). the counter consists of a thin, positively charged central wire surrounded by a concentric, circular, conducting cylindrical shell with an equal negative charge. thus, a strong radial electric field is set up inside the shell. the shell contains a low-pressure inert gas. a particle of radiation entering the device through the shell wall ionizes a few of the gas atoms. the resulting free electrons (e) are drawn to the positive wire. however, the electric field is so intense that, between collisions with gas atoms, the free electrons gain energy sufficient to ionize these atoms also. more free electrons are thereby created, and the process is repeated until the electrons reach the wire. the resulting "avalanche" of electrons is collected by the wire, generating a signal that is used to record the passage of the original particle of radiation. suppose the radius of the central wire is 24 âµm, the inner radius of the shell 2.3 cm, and the length of the shell 14 cm. if the electric field at the shell's inner wall is 2.8 ă— 104 n/c, what is the total positive charge on the central wire?