Physics, 14.12.2021 21:10 Ksedro1998
In the investigation shown, students tested to see how long it takes the two metal
bars to heat up enough to cause the beads of wax to fall off. One student believes
the wax on the lead rod will fall off; his lab partner says the opposite. Assuming that
aluminum has a lower specific heat than lead, which students is most likely correct and why?
A. The pieces of wax on the aluminum rose will off first because of aluminums low specific heat
B. The pieces of wax on lead rod will off first because of leads high specific heat
C. All four pieces of wax will off at the same time because metals are good conductors of head
D. The metals will not heat up enough to cause the wax to fall off because they are dense
Answers: 3
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When using two-wire cable to feed a 240-v appliance that does not require a neutral wire, you should a. mark both ends of the white wire green. b. use the cable as is. c. use only the black wire. d. mark both ends and any exposed area of the white wire black.
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Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat
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Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is
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Physics, 22.06.2019 10:40
When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is
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In the investigation shown, students tested to see how long it takes the two metal
bars to heat up...
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