Physics, 28.06.2019 03:00, alexialoredo625
What does kepler's first law of planetary motion imply? a. a planet moves at a constant speed at all points in its orbit. b. the distance that a planet is from the sun depends on the mass of the planet. c. uniform circular motion is adequate to describe the motion of all planets. d. the distance between the planet and the sun changes as the planet orbits the sun. e. planets closer to the sun than earth will show retrograde motion.
Answers: 1
Physics, 22.06.2019 05:10, zionnahl
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 12:30, lmolder1329
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (Ļ = 2770 kg/m3 and cp = 875 j/kgĀ°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22Ā°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200Ā°c.
Answers: 1
Physics, 23.06.2019 03:00, Shelleycarousel
Current vs. forcewhat type of relationship does this graph show?
Answers: 2
What does kepler's first law of planetary motion imply? a. a planet moves at a constant speed at a...
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