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1. What are linear and branched polymers? Can thermoplastics be branched?
2. Define (
a) a thermoplastic,
(b) thermosetting plastics,
(c) elastomers, and
(d) thermoplastic elastomers.
3. What electrical and optical applications are polymers used for? Explain using examples.
how many months will it take for the owner to recoup her $30,000 investment in the retrofitted pumps?
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..
The data listed below are claimed for a power cycle operating between hot and cold reservoirs at 1500 K and 450 K, respectively. For each case, determine whether the cycle operates reversibly, operates irreversibly, or is impossible.
What is PLC (Programmable Logic Controller)?
The wind is blowing over some suspension cables on a bridge, causing a force that is approximated by the function 0.02 sin 21πt. Is resonance possible if the force in the cable is 40 000 N, the cable has a mass of 10 kg/m, and it is 15 m long?
Assume that the coupler link is parallel to the frame link, and that the frame link is 10 cm, the coupler link is 7 cm, the link connecting the two jaws is 2 cm, and the fourth link is 3 cm. What is the angle by which the coupler link rotates from..
Also find the value of the maximum amplitude.
A power cycle has a thermal efficiency of 40% and generates electricity at a rate of 100 MW. The electricity is valued at $0.08 per kW h. Based on the cost of fuel, the cost to supply Qin is $4.50 per GJ.
Find the velocity of the bullet and the distance it has traveled into the water after 4 seconds. Please show detailed step by step process to solution.
a medical technician uses a pair of four inch long tweezers to remove a wood sliver from a patient. the technician is
in a machining operation an 8 minute tool life was achieved at a cutting speed of 500 fpm. at a cutting speed of 250
portable electric heaters are commonly used to heat small rooms. explain the energy transformation involved during the
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