Question

Compute the energy equivalent of 1gin kwh

Answer 1

answer : 9 × 10¹³ J

explanation : mass of substance , m = 1g = 10^-3 kg

velocity of light , v = 3 × 10^8 m/s

according to Enstien's energy - mass equivalent theory, Mass can be converted into pure energy . it is expressed by

= 10^-3 × (3 × 10^8)²

= 10^-3 × 9 × 10^16 J

= 9 × 10¹³ J

hence, 9 × 10¹³ J amount of energy is equivalent of 1g of substance.

Answer 2

Answer:

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Explanation:

How to calculate my energy consumption

Device Wattage (watts) x Hours Used Per Day = Watt-hours (Wh) per Day.

Device Usage (Wh) / 1000 (Wh/kWh) = Device Usage in kWh.

Daily Usage (kWh) x 30 (Days) = Approximate Monthly Usage (kWh/Month)