Airborne COVID-19 drops in electric fields. One of the major concerns with the COVID-19 pandemic is the transmission of the virus due to the water drops that are projected by sneezing, coughing, singing, talking, or even breathing. The larger drops soon settle out due to the gravitational force but drops with radii smaller than 5 um might remain suspended by air currents, posing a danger to anyone breathing them. However, common electric fields might remove some of them. Suppose a water drop with radius r - 1.51 μm and charge (-3.00 x 10 )e is near a flat plastic surface with surface charge density of +7.57 nC/m², as can commonly occur in homes. What are the magnitudes of (a) the Coulomb force and (b) the gravitational force that act on the drop? (a) Number (b) Number Units Units

Q: What is the magnitude of the electric field at the point (2.60 i -6.20j+ 2.20 k) m if the electric…

A: Position given = 2.6i^  - 6.2j^ +2.2k^ V (Potential) = 1.5xyz2 E = -(gradient of V)

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A: Height of roof (H) = 5.5 m height of vertical wall (h) = 6.8 m Angle of launch (θ) = 53 degree…

Q: Problem 1: A horizontal force, F, = 65 N, and a force, F2 = 18.1 N acting at an angle of 0 to the…

A: We have to calculate the acceleration of the block.   Given :- The forces are F1=65 N , F2=18.1 N.…

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A: Radius, r = 6.37×106 mCircumference, C = ? Surface area, A = ?

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A: C1=2.8uf C2=5.8uf Voltage applied (V)= 430 v

Q: solve for A

A: Given Data :  Q = +6.00μC To Find :  Total electric field at Point P

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A:

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A:

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A: "Since you have posted multiple questions, we will answer the first one . If you want the any…

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A: The force between the two current carrying conductor carrying current is given by  F = μo4π2 i i'rL…

Q: B. The circuit at right has three resistors, R1, R2 and R2 connected with two ideal batteries. The…

A:

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A: initial velocity at 40 degree is 50m/sfinal velocity at 15 degree is 50m/s

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A: the wavelength of light=618nm Two adjacent maxima occur at sinθ=0.24 & sinθ=0.35

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A: Solution

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A:

Q: 12. The magnetic field B at all points within a circular region of radius R is uniform and directed…

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Q: write a question that fits this diagram and solve it k M R 3 R Đ H

A:

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Q: In the figure the ideal batteries have emfs E1 = 4.9 V and E2 = 13.2 V, tl

A: Given: E1=4.9V E2=13.2V R1=R2=R3=R4=R5=1.64 Ohm V1=-12.02V

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A: (i) As all the bulbs are identical, their resistance will be equal. The bulb which dissipates more…

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A: Like charges repel each other and their electric field lines also repel each other . Unlike charges…

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A:

Q: A planet has an equatorial radius of 6.40 x 10 m and a mass of 5.00 x 1026 kg. (a) Compute the…

A: Given data:   A planet Radius (r) = 6.40×107 m Mass (m) = 5.00×1026 kg Required: The acceleration…

Q: Problem 1: A horizontal force, F1 = 65 N, and a force, F2 = 18.1 N acting at an angle of 0 to the…

A: Given mass of the block is m = 4.4 kg and the forces acting on the block are F1 = 65 N and F2 = 18.1…

Q: The propagation of uncertainty formula for the equation y - ax^2 is y (Ay)² +(Ay,)² where Aya =…

A: We are allowed to answer only one question as per the guideline.

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.