Question 1 i need help on
1 answer:
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#18) (√2)/(2y)
#19) 7x/5
#20) (2√5)/5
#21) (3√5)/5
#22) √5/b
#23) (2√(2n))/n
#24) (2√15)/15m
For #18:
#19:
#20:
#21:
#22:
#23:
#24:
#19) 7x/5
#20) (2√5)/5
#21) (3√5)/5
#22) √5/b
#23) (2√(2n))/n
#24) (2√15)/15m
For #18:
#19:
#20:
#21:
#22:
#23:
#24:
Answer:
-- increase in entropy
-- second law of thermodynamics
Step-by-step explanation:
The 1st law of thermodynamic states that there is conservation of energy, i.e. we cannot create energy and we cannot destroy energy also in an isolated system.
The given example is not a representative of the 1st law.
The states that there is a natural tendency of an isolated system to
into a more
Before dropping the notes and papers were in an isolated ordered system.
After dropping the papers scattered and did not remain in a stack position. It moves into a more disordered state.
Begore dropping down the notes and papers, they were in a stable position, i.e. no kinetic energy is there. No randomness when the notes and the papers were dropped. There is an increase in kinetic energy. There is randomness among the molecules by bombardment. So there is an increase in entropy.
Thus, above illustrations represents :
- an increase in entropy
- the second law of thermodynamics
Answer:
b) 15,90,24.133,20
c) New average = 19.4, New Median = 20
d) 8
e) 40%
f) Wednesday
Step-by-step explanation:
a) Mon Tue Wed Thu Fri
Week 1 17 16 20 24 22
Week 2 15 21 25 17 90
Week 3 16 17 22 20 20
This is a 3×5 matrix where the rows gives us the weeks(Week 1, Week 2, Week 3) and the columns are the weekdays(Mon, Tue, Wed, Thu, Fri).
b)The shortest duration out of the data given for fifteen days is 15 minutes.
The longest duration is 90 minutes.
To calculate the average of given data, we use the following formula:
Average =
=
=
=24.133
Median = the value that divides the data into two equal parts]
Ascending order: 15,16,16,17,17,17,20,20,20,21,22,22,24,25,90
Median = = 8th term = 20
c) Mon Tue Wed Thu Fri
Week 1 17 16 20 24 22
Week 2 15 21 25 17 19
Week 3 16 17 22 20 20
New average =
=
=
=19.4
New Median
Ascending order: 15,16,16,17,17,17,19,20,20,20,21,22,22,24,25
Median = = 8th term = 20
d) In order to know how many times we commute for 20 minutes or more, we check the entries that are greater than or equal to 20 minutes. We have 8 such entries. Thus, 8 times the commute was 20 minutes or more longer.
e) Percent of commutes less than 18 minutes = × 100%
=×100% = 40%
f) Average =
Average time spent in commuting on Monday = 16
Average time spent in commuting on Tuesday = 18
Average time spent in commuting on Wednesday = 22.3
Average time spent in commuting on Thursday = 20.3
Average time spent in commuting on Friday= 20.3
On Wednesday, we spent the most on commute time.