Answer:
La velocidad es una magnitud física que expresa la relación entre el espacio recorrido por un objeto, el tiempo empleado para ello y su dirección. ... Su unidad en el Sistema Internacional de Unidades es el metro por segundo (m/s), e incluye la dirección del desplazamiento
Explanation:
Answer:
In a primary cell, two electrodes (one of copper and other of zinc) of metal atoms are used. These electrodes are dipped in an electrolyte solution that causes the metals to produce their respective positive and negative ions.
In this way, the flow of charges takes place and supply the electricity to the source.
Unlike a primary cell, a dry cell contains paste of an electrolyte instead of the solution. The contents of electrolyte paste react with each other through a chemical process and convert the chemical energy into electrical energy.
Answer:
The magnitude of the electric field strength = 7.2 x 10⁸ N/C
Explanation:
The linear density:
![\begin{gathered} \lambda=18\mu C\text{ /cm} \\ \\ \lambda=\frac{18*10^{-6}C}{0.01m} \\ \\ \lambda=0.0018\text{ C/m} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Clambda%3D18%5Cmu%20C%5Ctext%7B%20%2Fcm%7D%20%5C%5C%20%20%5C%5C%20%5Clambda%3D%5Cfrac%7B18%2A10%5E%7B-6%7DC%7D%7B0.01m%7D%20%5C%5C%20%20%5C%5C%20%5Clambda%3D0.0018%5Ctext%7B%20C%2Fm%7D%20%5Cend%7Bgathered%7D)
Point r = 3 cm = 3/100 m
r = 0.03 m
The electric field strength is calculated below
![\begin{gathered} E=\frac{\lambda}{2\pi\epsilon_o\epsilon_rr} \\ \\ E=\frac{0.0018}{2\times3.14\times8.85\times10^{-12}\times1.5\times0.03} \\ \\ E=719709237.468\text{ N/C} \\ \\ E=7.2\times10^8\text{ N/C} \\ \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20E%3D%5Cfrac%7B%5Clambda%7D%7B2%5Cpi%5Cepsilon_o%5Cepsilon_rr%7D%20%5C%5C%20%20%5C%5C%20E%3D%5Cfrac%7B0.0018%7D%7B2%5Ctimes3.14%5Ctimes8.85%5Ctimes10%5E%7B-12%7D%5Ctimes1.5%5Ctimes0.03%7D%20%5C%5C%20%20%5C%5C%20E%3D719709237.468%5Ctext%7B%20N%2FC%7D%20%5C%5C%20%20%5C%5C%20E%3D7.2%5Ctimes10%5E8%5Ctext%7B%20N%2FC%7D%20%5C%5C%20%20%5Cend%7Bgathered%7D)
The magnitude of the electric field strength = 7.2 x 10⁸ N/C
Answer:
a. 900 J
b. 0.383
Explanation:
According to the question, the given data is as follows
Horizontal force = 150 N
Packing crate = 40.0 kg
Distance = 6.00 m
Based on the above information
a. The work done by the 150-N force is
![W = F x = \mu N x = \mu\ m\ g\ x](https://tex.z-dn.net/?f=W%20%3D%20F%20x%20%3D%20%5Cmu%20N%20x%20%3D%20%5Cmu%5C%20m%5C%20g%5C%20x)
![W = 150 \times 6](https://tex.z-dn.net/?f=W%20%3D%20150%20%5Ctimes%206)
= 900 J
b. Now the coefficient of kinetic friction between the crate and surface is
![\mu = \frac {F}{m\timesg}](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Cfrac%20%7BF%7D%7Bm%5Ctimesg%7D)
![= \frac{150}{40\times 9.8}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B150%7D%7B40%5Ctimes%209.8%7D)
= .383
We simply applied the above formulas so that each one part could calculate