Answer:
The negative sign represents the flow of charge in an opposite direction relative to point of action.
Any length or distance can be described in any unit of length.
The choice we make usually depends on which unit produces
the most convenient number ... the number that's easiest to
write down, remember, and tell other people about.
The choices that most reasonable people would make are ...
-- millimeters or centimeters for the length of an earthworm,
-- micrometers for the length of a typical cell nucleus,
-- centimeters for the length of the nucleus of unusual cells,
like chicken eggs or ostrich eggs,
-- meters for the length of a football field,
-- kilometers for the distance across the United States,
-- light-years for the distance between nearby stars, and
-- parsecs for the distance between galaxies or widely-separated stars.
Answer:
B. Magnetic fields apply a force on any metal.
Explanation:
hope this helps u
Answer:
Explanation:
Since 100C is the boiling temperature for water, for this problem we don't need to calculate the energy needed to get to the boiling point, just the heat or energy needed to vaporize the water to steam at 100C.
The formula for this is q=m(delta)
q is Joules of heat needed to vaporize the water to steam at 100C
m is mass in grams
Delta is in Joules per gram and can be looked up for water at this temperature. Here, it is approximately 2260J/g. This online lecture should help ease understanding: https://cabrillo.instructure.com/courses/10267/modules/items/256219
Therefore...
q=2.5g (2260J/g)= 5650J = 5.65kJ
I do not do Physics tutoring but am happy to answer questions here.