`0.16 (5x – 2) = 0.4x +

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asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

`0.16 (5x – 2) = 0.4x + 7`

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`0.4(3x –1) = 0.5x +
`0.25 (4x – 5) = 0.75x +
`3 (5x – 7) + 2(9x – 11) = 4(8x – 7) –
`10x – 5 – 7x = 5x + 15 –
A magnetic field set up using Helmholtz coils (described in Exercise 4.16) is uniform in a small region and has a magnitude of 0.75 T. In the same region, a uniform electrostatic field is maintained in a direction normal to the common axis of the coils. A narrow beam of (single species) charged particles all accelerated through 15 kV enters this region in a direction perpendicular to both the axis of the coils and the electrostatic field. If the beam remains undeflected when the electrostatic field is 9.0 × 10–5 V m–1, make a simple guess as to what the