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Moving glass slab*
A slab of glass moves to the right with speed v. A flash of light is emitted from A and passes through the glass to arrive at B a distance L away. The glass has thickness D in its rest frame, and the speed of light in the glass is c/n. How long does it take the light to go from A to B?
A 4.0 cm diameter sphere is heated to a temperature of 200 C & is enclosed in a large room at 20 C. Calculate the radiant heat loss if the surface emissivity is 0.6.
Determine the magnitude and nature of the stress induced in the material (a) if the temperature falls to 25 °C, (b) if the temperature rises to 95°C.
A 0.2-m3 rigid tank contains 8 kg of water (in any phase or phases) at 500 kPa. What is the temperature in the tank? Consider a sealed can that is filled with refrigerant-134a at 20°C. Now a leak develops, and the pressure in the can drops to the loc..
It is predicted that nanotechnology and the use of nanosized objects will allow many processes, procedures and products that, as of now, are dif?cult for us to comprehend. Among new nanotechnology areas is that of nanoscale ?uid mechanics. Fluid b..
The unit cell for uranium has orthorhombic symmetry with a, b and c lattice parameters of 0.286, 0.587, 0.495 nm, respectively. If its density, atomic weight, and atomic radius are 19.05 g/cm3, 238.03 g/mol, and 0.1385 nm, respectively, compute th..
For studying the effects of mechanical loading on the bone, a diaphys is isolated as shown in the Figure. Pins extended from the metal caps over the bone ends. Assume a load is applied between the ends of the pins as shown.
The atomic radii of a divalent cation and a monovalent anion are 0.77 nm and 0.136 nm, respectively. Calculate the force of attraction between these two ions at their equilibrium interionic separation.
a converging nozzle with an exit area of 0.05 m2 is connected to a reservoir containing air with a stagnation pressure
a stone is thrown vertically upward from a bridge located 40 m above the water. knowing that it strikes the water 4 s
Make a copy of the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition (Figure 10.22) and then sketch and label time-temperature paths on this diagram to produce the following microstructures:
A feed that is 50 mol% methane, 10 mol% n-butane, 15 mol% n-pentane, and 25 mol% n-hexane is flash distilled. F=150 kmol/h. Drum pressure =250 kPa, drum temperature =10 degrees celcius. use the depriester charts. find V/F, xi, yi, V, L.
1. Determine the thermal conductivity of the carbon nan- otube of Example 3.4 when the heating island tempera- ture is measured to be Th = 332.6 K, without evaluating the thermal resistances of the supports. The conditions are the same as in the exa..
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