4.80-kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 75.0 N. If the bucket star
ts from rest, what is the minimum time required to raise the bucket a vertical distance of 12.0 m without breaking the cord?
2 answers:
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-5 W is the heat flows through the slab in one day
Explanation:
- The heat transferred is directly proportional to the area of the material and the temperature differences in the body, whereas the heat transfer is inversely proportional to the length of the material
- The equation can be written as
where Q is the heat transfer, k is the thermal conductivity of the material, A is the area of the material and T is the difference in the temperature and the l is the length of the material.
- Given that, A= 100
, l= 2 cm, k = 0.1 J/S. m. c and T= 100 degree Celsius
- Substitute these values in the equation, you will get Q= -5 W