Skip to main content
Editing a short answer - math & science question by WIRIS
You have permission to :
Edit this question
General
Category
Default for System (16649)
Test-Lidia
Question name
Question text
<p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">La resistencia del aire está dada por : </span></p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨18px¨»«mrow»«mi»R«/mi»«mo»=«/mo»«mo»§#160;«/mo»«mn»0«/mn»«mo»,«/mo»«mn»0048«/mn»«mo»§#183;«/mo»«msub»«mi»C«/mi»«mi»a«/mi»«/msub»«mo»§#183;«/mo»«mi»A«/mi»«mo»§#183;«/mo»«msup»«mi»v«/mi»«mn»2«/mn»«/msup»«/mrow»«/mstyle»«/math» ; Donde : <br /></span></p> <p> </p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«msub»«mi»C«/mi»«mi»a«/mi»«/msub»«/math» = Coeficiente de penetración que depende de la forma del vehículo, sin dimensiones.<br /></span></p> <p><strong><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»A«/mi»«/math»</span></strong><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> = Sección transversal de vehículo </span><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">, por <span style="font-family: arial,helvetica,sans-serif; font-size: medium;">ello reduciendo la superficie disminuye la resistencia,en m<sup>2</sup>.</span> <br /></span></p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»v«/mi»«/math» = Velocidad del vehículo en «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfrac bevelled=¨true¨»«mrow»«mi»k«/mi»«mi»m«/mi»«/mrow»«mi»h«/mi»«/mfrac»«/math»</span></p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">0.048 = constante que considera la densidad del aire a presión atmosférica normal.</span></p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">Podemos decir , que: " La resistencia del aire es proporcional al cuadrado de la velocidad que adquiere el vehículo " , de modo que : <span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»R«/mi»«mo»=«/mo»«mi»K«/mi»«mo»§#183;«/mo»«msup»«mi»v«/mi»«mn»2«/mn»«/msup»«/math»<span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></span></span></p> <p style="text-align: center;"> </p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></span>El siguiente gráfico representa la resistencia <span style="font-family: arial,helvetica,sans-serif; font-size: medium;">( «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»R«/mi»«/math» )</span> del aire de un volkwagen (escarabajo) de coeficiente <span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨18px¨»«msub»«mi»C«/mi»«mi»a«/mi»«/msub»«mo»=«/mo»«mn»0«/mn»«mo».«/mo»«mn»43«/mn»«/mstyle»«/math» de penetración y sección transversal <span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨18px¨»«mi»A«/mi»«mo»=«/mo»«mn»1«/mn»«mo».«/mo»«mn»8«/mn»«mo»§#160;«/mo»«/mstyle»«/math» m<sup>2 </sup> , en función de la velocidad.</span></span></span></span><br /></span></p> <p style="text-align: left;"> <span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></span></span></p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">#graf 1</span></p> <p style="text-align: center;"> </p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">Estima la resistencia del aire cuando el vehículo <span style="font-family: arial,helvetica,sans-serif; font-size: medium;">viaja a «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»#«/mo»«mi»v«/mi»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mfrac bevelled=¨true¨»«mrow»«mi»k«/mi»«mi»m«/mi»«/mrow»«mi»h«/mi»«/mfrac»«/math».</span></span></p>
Default mark
General feedback
<p> </p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">Para estimar la resistencia del aire, cuando el vehículo viaja «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»#«/mo»«mi»v«/mi»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mfrac bevelled=¨true¨»«mrow»«mi»k«/mi»«mi»m«/mi»«/mrow»«mi»h«/mi»«/mfrac»«/math» , analizamos el gráfico:</span></p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> #graf 1</span></p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">Ubicamos el valor «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»#«/mo»«mi»v«/mi»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«/math»en el eje de las absisas como indica el punto verde de la figura:</span></p> <p style="text-align: center;"> </p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">#graf2</span></p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> </span></p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">Levantamos una flecha direccional desde el valor <span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»#«/mo»«mi»v«/mi»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«/math»hasta intersectar la curva de la gráfica como se indica en el gráfico:</span></span></span></span></span></p> <p style="text-align: center;"> </p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">#graf3<br /></span></span></span></span></span></p> <p style="text-align: center;"> </p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">y leemos el valor al que corresponde en el eje de las ordenadas cuando extendemos una flecha direccionada desde la curva al eje "<strong>y".</strong></span></span></span></span></span></p> <p style="text-align: center;"> </p> <p style="text-align: center;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">#graf4</span></span></span></span></span><strong><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><br /></span></span></span></span></span></strong></span></span></span></span></span></p> <p style="text-align: center;"> </p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">De esta manera , la imagen de <span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">«math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mo»#«/mo»«mi»v«/mi»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«mo»§#160;«/mo»«/math» es #r Newton.</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p> <p style="text-align: left;"> </p> <p style="text-align: left;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;">Como se debe anotar el resultado sin unidades, entonces : R = <span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"> #r</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></p> <p style="text-align: center;"> </p> <p> </p> <p> </p>
No, case is unimportant
Yes, case must match
Correct answers
You must provide at least one possible answer. The first matching answer will be used to determine the score and feedback. Click the icon next to the answer field to edit the mathematical properties of the answer and the question.
Answer 1
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
<p> </p> <p><span style="font-family: arial, helvetica, sans-serif; font-size: medium;">¡¡ Muy bien !! ... Ahora analicemos la propuesta:</span></p>
Answer 2
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
<p> </p> <p><span style="font-family: arial,helvetica,sans-serif; font-size: medium;"><span>Al parecer cometiste un error </span>. Ahora lo analizaremos. Si aún te quedan dudas, consulta con tu profesor de asignatura.</span></p>
Answer 3
Answer
Grade
None
100%
90%
83.33333%
80%
75%
70%
66.66667%
60%
50%
40%
33.33333%
30%
25%
20%
16.66667%
14.28571%
12.5%
11.11111%
10%
5%
Feedback
Settings for multiple tries
Penalty for each incorrect try
100%
50%
33.33333%
25%
20%
10%
0%
Hint 1
Hint text
Hint 2
Hint text
Created / last saved
Created
by
Admin User
on
Thursday, 12 January 2017, 10:04 AM
Last saved
by
Admin User
on
Thursday, 12 January 2017, 10:04 AM
There are required fields in this form marked
.