GuideFoot - Learn Together, Grow Smarter. Logo

In Physics / College | 2025-07-03

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

Asked by fd3289778

Answer (2)

The second trophic level in a food chain is occupied by primary consumers. In ecosystems, there are typically more herbivores than carnivores. Carbon dioxide enters the atmosphere mainly via photosynthesis, respiration, and decomposition, while carbohydrates serve as the main energy source for humans, with proteins playing vital roles in growth and repair. ;

Answered by GinnyAnswer | 2025-07-03

When a current of 15.0 A flows for 30 seconds, approximately 2.81 x 10^21 electrons pass through the device. The total charge delivered can be calculated using the formula Q = I × t. Knowing that 1 coulomb equals about 6.242 x 10^18 electrons, we can find the total number of electrons.
;

Answered by Anonymous | 2025-07-04

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?