<p><span>A proton is released from rest in a uniform electric field of magnitude
ID: 2043379 • Letter: #
Question
<p><span>A proton is released from rest in a uniform electric field of magnitude </span><span>424</span><span> N/C.</span><div class="indent">(a) Find the electric force on the proton.</div>
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<td>magnitude    </td>
<td><span class="qTextField"><input id="RN_1701939_4_0_1704823" dir="ltr" name="RN_1701939_4_0_1704823" size="10" type="text" /></span> N</td>
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<td>direction    </td>
<td><select id="RC_1701939_4_1_1704823" name="RC_1701939_4_1_1704823"> <option>---Select---</option> <option value="0">in the direction of the electric field</option> <option value="1">in the opposite direction of the electric field</option> <option value="2">The magnitude is zero.</option></select></td>
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<p>
<div class="indent"><br />(b) Find the acceleration of the proton.</div>
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<td>magnitude    </td>
<td><span class="qTextField"><input id="RN_1701939_4_2_1704823" dir="ltr" name="RN_1701939_4_2_1704823" size="10" type="text" /></span> m/s<sup>2</sup></td>
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<td>direction    </td>
<td><select id="RC_1701939_4_3_1704823" name="RC_1701939_4_3_1704823"> <option>---Select---</option> <option value="0">in the direction of the electric field</option> <option value="1">in the opposite direction of the electric field</option> <option value="2">The magnitude is zero.</option></select></td>
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<div class="indent"><br />(c) Find the distance it travels in <span>2.12</span> µs.<br /><span class="qTextField"><input id="RN_1701939_4_4_1704823" dir="ltr" name="RN_1701939_4_4_1704823" size="10" type="text" /></span> cm</div>
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Explanation / Answer
What is "1.21 105 N/C" supposed to mean? I can guess it's 1.21×105 N/C, but I can't base my answer on a guess.
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