The cost of boiling 500 cm³ of water using the 3 KW Kettle is 1.35p
This is defined as the rate in which energy is consumed. Electrical power is expressed mathematically as:
Power (P) = Energy (E) / time (t)
P = E / t
E = Pt
E = 3 × 0.05
E = 0.15 KWh
Cost = Energy × cost per unit
Cost = 0.15 × 9
Cost = 1.35p
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Answer:
Explanation:
Given data
time=0.530 h
Average velocity Vavg=19.0 km/s
To find
Displacement Δx
Solution
The Formula for average velocity is given as
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