Discuss stellar parallax, how it works, and how it is used as a tool in astronomy.
which spect...
Physics, 14.09.2019 10:30 cantrelate
Discuss stellar parallax, how it works, and how it is used as a tool in astronomy.
which spectral class has the highest surface temperature?
which spectral class has the coolest surface temperature?
what is the spectral class of the sun?
one of our tools for measuring cosmic distances is cepheid variable stars. explain how they allow the determination of distances.
the hertzsprung-russell diagram is a tool as useful to astronomers as the periodic table is to chemists. explain the structure of the h-r diagram and what it tells us.
there are several key steps necessary for the creation of a star. provide an overview description of these key steps.
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Physics, 21.06.2019 22:30
The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Physics, 22.06.2019 10:00
Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.
Answers: 2
Physics, 22.06.2019 14:30
A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.
Answers: 1
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