An electric bulb rated 100 W and an electric refrigerator rated 400 W. operator 10 hours/day. What is the cost of the energy to operate it for 10 days at Rs. 8.00 per kWh?
an ideal pendulum consisting of a point mass suspended by a weightless inextensible perfectly flexible thread and free to vibrate without friction —distinguished from physical pendulum.
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Verified answer
Answer:
Energy of one day =Power×Time=400W×8h=3.2KWh
Energy of 30 days =3.2KWh×30=96KWh
So, cost of the energy =96×3=Rs.288
Answer:
an ideal pendulum consisting of a point mass suspended by a weightless inextensible perfectly flexible thread and free to vibrate without friction —distinguished from physical pendulum.
Explanation:
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