A Horizontally-Projected Beam of Protons Travelling at 55 Km/s Travels $\times$

question 3

Multiple Choice

A horizontally-projected beam of protons travelling at 55 km/s travels between two parallel plates separated by 7.4 cm,and 12 cm long,between which there is an electric field of 7.2 V/m upward.If the beam enters the region at a height of 3.7 cm above the lower plate,at what height above the lower plate is the beam when it exits? The proton mass is 1.67 $\times$ 10^-27 kg.

• A) 4.4 cm
• B) 3.0 cm
• C) 5.1 cm
• D) 2.3 cm

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A reduction or lack of the usual level of one or more of the senses, including sight, hearing, touch, taste, and smell.