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Post New Question
All Questions
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234927 Questions
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538
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+244
Very Important test question
A refirgerator pulls heat from the inside compartment at the rate of of 10kJ. It dumps 14 KJ into the air in the kitchen each cycle. What is the coefficient of the performance?
A. 0.40
B.0.71
read more ..
DamienDenninson
Jun 7, 2016
0
1387
5
+244
entropy of water
when 100 g of liquid water initally at a temperature of 33 c freezes, the entropy of the water:
A.decreases
B.does not change
C.could either increase or decrease it depends on other factors
read more ..
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DamienDenninson
Jun 7, 2016
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636
1
helppppppppppppp
simplify 3x3x3x3
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Guest
Jun 7, 2016
0
385
1
Inequality
7.2x-4.8>24
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Guest
Jun 7, 2016
0
604
3
+16
help...
5^((x+1)/(1-2x)) < 0.2^-3
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exora
Jun 7, 2016
0
471
0
+244
Medical
A refirgerator pulls heat from the inside compartment at the rate of of 10kJ. It dumps 14 KJ into the air in the kitchen each cycle. What is the coefficient of the performance?
A. 0.40
B.0.71
read more ..
DamienDenninson
Jun 7, 2016
0
473
0
+244
heat engine
a heat engine operates between a hot reservoir at 444 C and a cold reservoir at 111 C. What is the maximum theroretical efficicney possible this engine?
A. 46%
B.75%
read more ..
DamienDenninson
Jun 7, 2016
0
629
1
10-(2y-6)-y=?
10-(2y-6)-y=?
y=8
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Guest
Jun 7, 2016
0
472
2
Math
how many dimes are there in $7.30
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Guest
Jun 7, 2016
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425
1
permutations and commbinations
a class has 35 students, and is choosing 6 students to represent them at a school-wide spelling bee. The winning class gets a pizza party. how many different teams are possible from that class?
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Guest
Jun 7, 2016
0
524
3
+16
rly need help...
(9/25)^((4x^2)+4x-11))*(5/3)^(2x+1)=(5/3)^9
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exora
Jun 7, 2016
0
463
1
The question of Pi
If a pie ate Pi what would happen?
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Guest
Jun 7, 2016
0
781
1
what is the GCF of 7,14,49, and 63
what is the GCF of 7,14,49, and 63
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Guest
Jun 7, 2016
Jun 6, 2016
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472
2
Im having trouble with this problem can you help me?
Im having trouble with this problem can you help me?
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Guest
Jun 6, 2016
0
420
0
Im having trouble with this problem can you help me?
Im having trouble with this problem can you help me?
Guest
Jun 6, 2016
0
548
1
can you help me with this algebra problem?
can you help me with this algebra problem?
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Guest
Jun 6, 2016
0
792
1
What symbol is a comma in math?
What symbol is a comma in math?
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Guest
Jun 6, 2016
0
473
1
Hey im just wanting to know how do frieze patterns work
Hey im just wanting to know how do frieze patterns work
yes it is me who asked about them yesterday but never got an answer so if it asks to add 6 more tiles and the image is mirrior viewed what do i do
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Guest
Jun 6, 2016
0
389
2
8% of a number
how do I figure 8% of a number
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Guest
Jun 6, 2016
0
956
1
sine and cosine law
sin(68)/x=sin(37)/3 how do you find the value of x
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Guest
Jun 6, 2016
0
429
0
+244
Medical Physics
A refirgerator pulls heat from the inside compartment at the rate of of 10kJ. It dumps 14 KJ into the air in the kitchen each cycle. What is the coefficient of the performance?
A. 0.40
B.0.71
read more ..
DamienDenninson
Jun 6, 2016
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