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Questions in physics

[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?

[Done] Express 5 m per second as a speed in kilometers per hour.

[Done] An earthquake registered 7.4 on the Richter scale. If the reference intensity of this quake was $2.0 \times 10^{11}$, what was its intensity? A. $1.64 \times 10^3$ B. $2.51 \times 10^7$ C. $5.02 \times 10^{18}$ D. $3.27 \times 10^{14}$

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

[Done] Select the best answer for the question. 20. Static electricity is a standing electric charge created by A. splitting atoms and releasing protons. B. displacing protons. C. displacing electrons. D. splitting atoms and releasing the electrons.

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

[Done] Which is one of Edwin Hubble's findings that supports the big bang theory? A. The universe started at a central point. B. Planetesimals formed in debris disks. C. Visible matter only makes up about 5% of the universe. D. The Milky Way is the only galaxy in the universe.

[Done] Part C The momentum of an object is determined to be $7.2 \times 10^{-3} kg \cdot m / s$. Express this quantity as provided or use any equivalent unit. (Note: $1 kg=1000 g$ ). Value Units

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