Physics, 23.04.2020 21:20 VgCarlos2596
***PLEASE HELP*** (you don’t have to answer all but at least 1 or 2 answers would help!!!)
1. Under the influence of gravity, over time the dense central part of a galaxy will do what?
A. Stay as it is, forces balanced
B. Contract
C. Expand
D. Stay the same size but spin more slowly
2. Where is the most baryonic matter of the universe found?
A. In the comets and asteroids
B. In the interstellar gases and stars
C. In dark matter and dark energy
D. In planets and natural satellites
3. When parts of a gas cloud collapse, where does the material first form clumps?
A. In denser regions with little space between atoms
B. In denser regions with more space between atoms
C. In less dense regions with more space between atoms
D. In less dense regions with little space between atoms
Answers: 2
Physics, 22.06.2019 08:00
5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.
Answers: 3
Physics, 22.06.2019 10:40
Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v
Answers: 1
***PLEASE HELP*** (you don’t have to answer all but at least 1 or 2 answers would help!!!)
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