find the y-component, Physics questions help

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7nef

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Hello,

This is 6 easy questions for physics

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...00 AT&T * 12:52 PM 65% session.masteringphysics.com Problem 21.6 MasteringPhysics 1 of 6 Problem 21.6 Two small spheres spaced 20.0 cm apart have equal charge. Part A How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N? Submit Give Up Continue > < m ..000 AT&T 12:53 PM 64% • session.masteringphysics.com с Problem 21.20 MasteringPhysics Problem 21.20 Two point charges are placed on the x-axis as follows: one positive charge, q1 = 4.05 nC , is located to the right of the origin at x = 0.205 m , and a second positive charge, q2 = 4.98 nC , is located to the left of the origin at x = -0.295 m. Part A What is the total force (magnitude and direction) exerted by these two charges on a negative point charge, 43 = -6.03 nC that is placed at the origin? Use 8.85*10-12 CP/(N · m²) for the permittivity of free space. Take positive forces to be along the positive x-axis. Do not use unit vectors. N Submit Give Up Continue > < 64% ..000 AT&T * 12:53 PM A session.masteringphysics.com Problem 21.36 MasteringPhysics Problem 21.36 A uniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.69 cm . A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 1.50x10-6 s. Part A Find the magnitude of the electric field. Use 1.60x10-19 C for the magnitude of the charge on an electron and 1.67x10-27 kg for the mass of a proton. N/C Submit Give Up Part B Find the speed of the proton when it strikes the negatively charged plate. m/s Submit Give Up ..000 AT&T 12:53 PM 64% • session.masteringphysics.com с Problem 21.40 MasteringPhysics 4 of 6 Problem 21.40 Two particles with positive charges q1 = 0.450 nC and q2 = 7.50 nC are separated by a distance of 1.14 m . Part A Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero. m Submit Give Up Continue > < m © 64% ..000 AT&T * 12:53 PM i session.masteringphysics.com Problem 21.22 MasteringPhysics Two positive point charges q are placed on the y-axis at y= a and y = -a. A negative point charge - Q is located at some point on the +x-axis. Part A Find the x-component of the net force that the two positive charges exert on-Q. (Your answer should only involve k,q, Q, a, and the coordinate x of the third charge.) Fr = Submit Give Up Part B Find the y-component of the net force that the two positive charges exert on -Q. (Your answer should only involve k, q, Q, a, and the coordinate x of the third charge.) Fy = Submit Give Up Part C What is the net force on the charge - Q when it is at the origin (r=0)2
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Explanation & Answer

Hi, find attached the answers. Yours is the one labelled Electric Fields Physics, the others are Electric Fields Physics 1 and Electric Fields Physics 2, respectively.

21.6

890 𝑒𝑙𝑒𝑐𝑡𝑟𝑜𝑛𝑠

21.20 3.358�...


Anonymous
Very useful material for studying!

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