The answer is 3.02 x 10^-5
On a hot dry day, the amount of water vapour present in atmosphere is less. Thus, water present inside the desert cooler evaporates more, thereby cooling the surroundings more. Hence, a desert cooler cools better on a hot dry day.
<span>.Ask a Question
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.Analyze Your Data and Draw a Conclusion.
<span>.Communicate Your Results.</span></span>
10pi is the answer. i believe. i hope this helps.
Answer:
Power = 14.7 W
Explanation:
Given:
Mass of the object to be raised is,
Height to be raised is,
Time taken during the work is,
As the object is raised vertically, the acceleration acting on it is due to gravity and is equal to 9.8 m/s².
Now, work done in moving an object of mass 'm' to a height 'h' is given as:
Now, power is given as the rate of doing work which is given as:
Now, plug in all the values and solve for power. This gives,
Therefore, the power required to raise the object to a height of 3 meters is 14.7 watts.