<h2>Answer
</h2>
4.6 m/s in the same direction as 5.8 m/s velocity.
<h2>Explanation </h2>
Velocity is a vector quantity. It has both magnitude and direction.
Taking the 5.8 m/s moving to the right as positive, then the 1.2 m/s moving to the left will be negative.
∴ 5.8 + -1.2 = 5.8 - 1.2
= 4.6 m/s.
Since the answer is positive, it has the same direction 5.8 m/s velocity.
The resultant velocity vector is 4.6 m/s to the right.
Explanation:
It is given that,
Work done, W = 240 J
Heat removed, Q = 610 J
(a) The refrigerator's coefficient of performance is given by :
COF = 2.54
(b) Let Q' is the heat per cycle is exhausted to the kitchen. It is given by :
Q' = Q + W
Q' = 610 + 240
Q' = 850 J
Hence, this is the required solution.
Answer:
20 to 30
Explanation:
20 to 30 is the correct answer
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Airida [17]
Answer:
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