Physics, 03.12.2021 19:20 merrymary3000
T / F An increase in polymer cross-linking will decrease the ductility of a polymer T / F An increase in the strain rate will increase the strength of a plastic T / F An increase in temperature will increase the ductility of a plastic T / F In general terms, a thermoset is more easily recycled than a thermoplastic T / F Fillers can be added to a polymer to improve tensile strength and toughness T / F Unsaturated macromolecules tend to have more complicated 3D shapes than saturated molecules T / F For polymeric materials, the addition of polar side atoms or groups causes their glass transition temperatures to increase
Answers: 2
Physics, 21.06.2019 18:30
A6,600 kg train car moving at +2.0 m/s bumps into and locks together with one of mass 5,400kg moving at -3.0m/s. what is their final velocity? +0.50 m/s -1.0 m/s +2.5 m/s -0.25 m/s
Answers: 3
Physics, 21.06.2019 22:20
The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?
Answers: 2
Physics, 22.06.2019 12:30
An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above
Answers: 3
T / F An increase in polymer cross-linking will decrease the ductility of a polymer T / F An increas...
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