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EastWind [94]
3 years ago
10

John owns an engine which receives heat input from a reservoir at 600 K and loses heat to a sink at 300 K. What is the maximum p

ossible efficiency of this engine?
A.
25 percent

B.
50 percent

C.
75 percent

D.
100 percent
Mathematics
2 answers:
Lelu [443]3 years ago
8 0

Answer:

D. 100 percent

Step-by-step explanation:

it is 100 percent because the reservoir is putting out 600k, but loses 300k, which would be easy to think it would be 50 percent because 300k is half of 600k, but however its peek outage is putting out 600k, therefore 600k = 600k, 100%.

Mariulka [41]3 years ago
7 0
B. 50 %

Formula : Output / Input. X 100%

: 300/600. X 100

= 50%
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8 0
3 years ago
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Luda [366]

Answer:

a

Step-by-step explanation:

4 0
3 years ago
The sum of 5 consecutive even numbers is 100. What is the first number in this sequence?
gayaneshka [121]

Answer:

16

Step-by-step explanation:

Let's represent this with an equation, where x is the first number. The next number must be x+2, because it has to be even, not x+1, and the rest continue the same way:

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4 0
3 years ago
The product of odd numbers is always even true or false ?
likoan [24]

Answer:

false

Step-by-step explanation:

let's say we have two odd numbers

2k+1 and 2t+1

(2k+1)(2t+1)\\\\=4kt+2k+2t+1\\\\=2(2kt+k+t)+1

so we see it's odd

6 0
3 years ago
Read 2 more answers
2.54 cm / 1 in. = 100 cm / x in. show the work
Kitty [74]
2.45 cm= 1 in. so 100 cm must equal 39.37 in. because you already know 2.45 cm equals 1 inch and 1 metre equals 100 cm and 1 metre is equal to 39.37.
5 0
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