Physics, 22.02.2020 01:25 apalacios3503
A positive point charge q is placed on the +y-axis at y = a, and a negative point charge –q is placed on the –y-axis at y = -a. A negative point charge –Q is located at some point on the +x-axis.
a. Draw a free-body diagram showing the forces that act on the charge –Q.
b. Find the x and y components of the net force that the two charges q and –q exert on –Q. (Your answer should involve only k, q, Q, a, and the x-coordinate of the charge -Q)
c. What is the net force on the charge –Q when it is at the origin ( x = 0 )?
Answers: 3
Physics, 21.06.2019 14:00
Two red blood cells each have a mass of 9.0 multiply.gif 10-14 kg and carry a negative charge spread uniformly over their surfaces. the repulsion arising from the excess charge prevents the cells from clumping together. one cell carries −2.50 pc of charge and the other −3.10 pc, and each cell can be modeled as a sphere 7.5 μm in diameter. (a) what speed would they need when very far away from each other to get close enough to just touch? assume that there is no viscous drag from any of the surrounding liquid. answer is: 321 m/s how do i find this (b) what is the maximum acceleration of the cells in part (a)? answer is: 1.38e+10 m/s2 how did they find this answer
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Physics, 21.06.2019 22:00
Bob camina 200 m sur, luego trota 400 m suroeste, luego camina 200 m en una dirección 30? norte del este. a. dibuje una gráfica de los movimientos de bob. use una regla y transportador. b. use método gráfico y analíitico para hallar el desplazamiento total que bob recorrió. (magnitud y dirección) c. compare los resultados obtenidos por el método gráfico y analítico. (por ciento de diferencia).
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A positive point charge q is placed on the +y-axis at y = a, and a negative point charge –q is place...
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