teal5393
08.12.2021 •
Mathematics
Tell me which option is correct: (0,m) (b,0) (m,0) (0,b) which one of those
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Ответ:
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Class 11
>>Physics
>>Units and Measurement
>>Errors in Measurement
>>You measure two quantities ...
Question
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You measure two quantities as A=1.0m±0.2m, B=2.0m±0.2m. We should report correct value for
AB
as
Medium
Solution
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Correct option is
D
1.4m±0.2m
Here, A=1.0m±0.2m, B=2.0m±0.2m
AB=(1.0m)(2.0m)=2.0m
2
AB
=
2.0m
=1.414m
Rounding off to two significant figures, we get
AB
=1.4m
AB
ΔAB
=
2
1
(
A
ΔA
+
B
ΔB
)=
2
1
(
1.0
0.2
+
2.0
0.2
)=
2
0.3
Δ
AB
=
2
0.3
×
AB
=
2
0.3
×1.414=0.212m
Rounding off to one significant figure, we get
Δ
AB
=0.2m
The correct value for
AB
is 1.4m±0.2m
Ответ:
Step-by-step explanation:
m,0
Ответ:
18000 = 50x + 100 (getting 50 points per 7-letter word, & 100 for playing)
18000 (-100) = 50x + 100 (-100)
17900 = 50x
17900/50 = 50x/50
x = 358
358 7-letter words is needed to break the record