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Questions in physics

[Done] Kelsha makes a table to compare plasmas and solids. | & Plasma & Solid | | Kinetic energy | X | | Density | | Y | Which labels belong in the cells marked [tex]$X$[/tex] and [tex]$Y$[/tex]? A. X: High, Y: High B. X: High, Y: Low C. X: Low, Y: High D. X: Low, Y: Low

[Done] Suppose for an unexplained reason a star near Earth started shrinking. At what stage is the gravitational force between Earth and the star the greatest? | Stage | Mass of Earth (kg) | Mass of Star (kg) | |---|---|---| | 1 | 5.97 x 10^{24} | 1.8 x 10^{30} | | 2 | 5.97 x 10^{24} | 2.7 x 10^{27} | | 3 | 5.97 x 10^{24} | 5.0 x 10^{25} | | 4 | 5.97 x 10^{24} | 4.5 x 10^{23} | A. Stage 1 B. Stage 2 C. Stage 3 D. Stage 4

[Done] If it takes a planet [tex]$2.8 \times 10^8 s$[/tex] to orbit a star with a mass of [tex]$6.2 \times 10^{30} kg$[/tex], what is the average distance between the planet and the star? A. [tex]$1.43 \times 10^9 m$[/tex] B. [tex]$9.36 \times 10^{11} m$[/tex] C. [tex]$5.42 \times 10^{13} m$[/tex] D. [tex]$9.06 \times 10^{17} m$[/tex]

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] In my group dynamics class, what type of group do you want to conduct (from the five types covered in chapter 1)?

[Done] On which of the following have we photographed huge dust storms? A. Mercury B. Venus C. Moon D. Mars

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] The atmospheres of planets have been known to change since the planets formed. Which of the following cause the atmospheres to change? A. Volcanic outgassing B. Vaporization from planet's surface C. Condensation of atmospheric gases D. All of the above

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?