Physics, 20.11.2020 17:10, aesthetickait
Consider a spatially flat, matter-dominated Universe (Ωm = Ω = 1), which is contracting with time. How does the density perturbation, δ ≡ (rho − rho¯)/rho¯, evolve with time in such a Universe? Here rho is the (average) density?
Answers: 2
Physics, 22.06.2019 09:00, keshho
When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.
Answers: 1
Physics, 22.06.2019 16:50, boopiee2349
Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.
Answers: 1
Physics, 22.06.2019 18:00, cratsley321
By what primary heat transfer mechanism does the sun warm the earth?
Answers: 1
Physics, 22.06.2019 19:30, chelseayazzie16
What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical
Answers: 2
Consider a spatially flat, matter-dominated Universe (Ωm = Ω = 1), which is contracting with time. H...
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