GuideFoot - Learn Together, Grow Smarter. Logo

In Physics / High School | 2025-07-06

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

Asked by jujubeans2007

Answer (2)

To determine how many electrons flow through the device, we first calculate the total charge using the current and time, which is 450 C. Then, dividing this by the charge of a single electron (1.6 x 10^-19 C), we find that approximately 2.81 x 10^21 electrons flow through the device. This provides a clear picture of the flow of electric charge in terms of electrons over that period.
;

Answered by Anonymous | 2025-07-07

The English horn is named due to a translation error from the French "cor anglaise," meaning English horn, and refers to its shape rather than being a true horn. While it looks similar to a hunting horn, it is a woodwind instrument, not a brass one. It became popular in England through its use by composers but is not necessarily an English creation. ;

Answered by GinnyAnswer | 2025-07-07

Related Questions in Physics

📝 Answered - Which best explains what happens when an electron moves from an excited state to the ground state? A. The electron absorbs energy as it moves to a lower energy level. B. The electron absorbs energy as it moves to a higher energy level. C. The electron releases energy as it moves to a higher energy level. D. The electron releases energy as it moves to a lower energy level.

📝 Answered - Particle A has very little mass in comparison to Particle B. Both particles are in the same atom. Which is the best conclusion about Particles A and B? A. They have the same charge. B. They are located in the nucleus together. C. Particle A has a positive charge, and Particle B is neutral. D. Particle A orbits the nucleus, and Particle B is located in the nucleus.

📝 Answered - Light of wavelength [tex]$5 \times 10^{-7} m$[/tex] falls on a sensitive metal plate with photoelectric work function 1.90 eV. Find the kinetic energy of the photoelectrons emitted and the stopping potential. (given [tex]$h =6.62 \times 10^{-34} Js$[/tex])

📝 Answered - Taden has found a table of the atmospheric layers of the Sun. However, he can't make out the names of the layers in the chart. [tex] \begin{tabular}{|l|l|l|l|} \hline & \multicolumn{1}{|c|}{ A } & \multicolumn{1}{c|}{ B } & \multicolumn{1}{c|}{ C } \\ \hline Position & Lowest & Middle & Outermost \\ \hline Thickness & 100 km & 2000 km & Millions of kilometers \\ \hline Temperature & 5,500 & 6,000 to 20,000 & $2,000,000$ \\ \hline \end{tabular} [/tex] What are the names of the Sun's layers described in columns A, B, and C? A. Corona; B: Photosphere; C: Chromosphere B. Core; B: Chromosphere; C: Photosphere C. Chromosphere; B: Corona; C: Core D. Photosphere; B: Chromosphere; C: Corona

📝 Answered - Charges of +5 C and -9 C are at a distance of 1 m from each other. Which diagram represents the force between the two charges?