Physics, 15.07.2019 21:30 santiagoagilg
Consider a 1000-w iron whose base plate is made of 0.5-cm-thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp= 875 j/kg-°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90 percent of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
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In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.
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Physics, 22.06.2019 14:00
This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.
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Physics, 22.06.2019 20:40
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 3
Consider a 1000-w iron whose base plate is made of 0.5-cm-thick aluminum alloy 2024-t6 (ρ = 2770 kg/...
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