Question: P-7 Please I need help with this question needed very clearly and step-by-step explanation and NEEDED ONLY HANDWRITTEN PLEASE , will be really appreciated for

P-7 Please I need help with this question needed very clearly and step-by-step explanation and NEEDED ONLY HANDWRITTEN PLEASE, will be really appreciated for your help.

NEEDED ONLY HANDWRITTEN SOLUTIONS

In an old-fashioned (i.e. before flat screens) TV picture tube, electrons are accelerated by thousands of volts through a vacuum. If a TV set were laid on its back, would electrons be able to move upward against the force of gravity? What potential difference, acting over a distance of 20 cm, would be needed to balance the downward force of gravity so that an electron would remain stationary? Assume that the electric field is uniform

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