Physics, 16.04.2020 01:02 cathydaves
A long plastic rod of 20-mm diameter (k = 0.3 W/m · K and rhocp = 1040 kJ/m3 · K) is uniformly heated in an oven as preparation for a pressing operation. For best results, the temperature in the rod should not be less than 200°C. To what uniform temperature should the rod be heated in the oven if, for the worst case, the rod sits on a conveyor for 3 min while exposed to convection cooling with ambient air at 25°C and with a convection coefficient of 10 W/m2 · K? A further condition for good results is a maximum–minimum temperature difference of less than 10°C. Is this condition satisfied? If not, what could you do to satisfy it?
Answers: 3
Physics, 22.06.2019 04:30
Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?
Answers: 3
Physics, 22.06.2019 14:00
If element x has 99 protons how many electrons does it have
Answers: 1
Physics, 22.06.2019 14:30
Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia
Answers: 2
Physics, 22.06.2019 21:30
Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?
Answers: 3
A long plastic rod of 20-mm diameter (k = 0.3 W/m · K and rhocp = 1040 kJ/m3 · K) is uniformly heate...
Mathematics, 26.09.2019 05:10
Mathematics, 26.09.2019 05:10
Biology, 26.09.2019 05:10
Mathematics, 26.09.2019 05:10
Biology, 26.09.2019 05:10
Mathematics, 26.09.2019 05:10
Mathematics, 26.09.2019 05:10
Biology, 26.09.2019 05:10
English, 26.09.2019 05:10
History, 26.09.2019 05:10
Mathematics, 26.09.2019 05:10
Mathematics, 26.09.2019 05:10
Geography, 26.09.2019 05:10