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Test-Lidia
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Question text
<p>Tenemos {m1} Kg de una sustancia de calor específico {ce1} J/Kg·K a {t1} ºC y lo mezclamos con {m2} Kg de otra sustancia de calor específico {ce2} J/Kg·K a {t2} ºC. Calcula la temperatura de equilibrio</p>
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Answer
Correct answer formula=
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%
Tolerance ±=
Tolerance type
Relative
Nominal
Correct answer shows
0
1
2
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8
9
Format
decimals
significant figures
Feedback
Answer
Correct answer formula=
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%
Tolerance ±=
Tolerance type
Relative
Nominal
Correct answer shows
0
1
2
3
4
5
6
7
8
9
Format
decimals
significant figures
Feedback
Unit handling
Unit handling
Units are not used at all. Only the numerical value is graded.
Units are optional. If a unit is entered, it is used to convert the response to Unit 1 before grading.
The unit must be given, and will be graded.
Unit penalty
Unit penalty
as a fraction (0-1) of the response grade
as a fraction (0-1) of the question grade
Units are input using
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Units go
on the right, for example 1.00cm or 1.00km
on the left, for example $1.00 or £1.00
Unit 1
Unit
Multiplier
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
The wild cards
{x..}
will be substituted by a numerical value from the generated values
Wild cards parameters used to generate the values
Param {
m2
}
Range of Values
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Param {
ce2
}
Range of Values
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Param {
t2
}
Range of Values
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Param {
m1
}
Range of Values
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Param {
ce1
}
Range of Values
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Decimal places
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9
10
Param {
t1
}
Range of Values
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Decimal places
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new set(s) of wild card(s) values
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set(s) of wild card(s) values
Wild card(s) values
Wild card {
m2
}
Wild card {
ce2
}
Wild card {
t2
}
Wild card {
m1
}
Wild card {
ce1
}
Wild card {
t1
}
Set 30
(({m2}*{ce2}*{t2})+({m1}*{ce1}*{t1}))/(({m1}*{ce1})+({m2}*{ce2}))
((256.7*1722.9*38.6)+(327.9*1269.0*64.0))/((327.9*1269.0)+(256.7*1722.9)) = 50.913
Correct answer : 50.913 inside limits of true value (({m2}*{ce2}*{t2})+({m1}*{ce1}*{t1}))/(({m1}*{ce1})+({m2}*{ce2}))
Min: 49.894644400369 --- Max: 51.931160498344
Created / last saved
Created
by
Admin User
on
Monday, 6 August 2018, 3:27 PM
Last saved
by
Admin User
on
Monday, 6 August 2018, 3:27 PM
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