A DVD player uses 25 W of power. If it is used for 10 hours a day, and electricity costs 0.64 toea/kWh, what is the cost of power used per day?

April 11, 2026Physics

ScanSolve AI Answer

April 11, 2026

Answer

0.16 toea/day

Step 1: Convert the power from watts to kilowatts. $P = 25 W = \frac{25}{1000} kW = 0.025 \text{ kW}$

Step 2: Calculate the energy consumed per day in kilowatt-hours (KWh). $E = P \times t$ $E = 0.025 kW \times 10 \text{ hrs/day}$ $E = 0.25 \text{ KWh/day}$

Step 3: Calculate the cost of power used per day. $\text{Cost} = E \times \text{Rate}$ $\text{Cost} = 0.25 KWh/day \times 0.64 \text{ toea/KWh}$ $\text{Cost} = 0.16 \text{ toea/day}$

The cost of power used by the DVD player is 0.16 toea/day.

$\boxed{0.16 toea/day}$

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Quick Answer

Convert the power from watts to kilowatts. P = 25 W = (25)/(1000) kW = 0.025 kW Step 2: Calculate the energy consumed per day in kilowatt-hours (KWh).

Asked on April 11, 2026Physics

This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.

ScanSolve AI AnswerAnswered on April 11, 2026

Step 1: Convert the power from watts to kilowatts. P = 25 W = (25)/(1000) kW = 0.025 kW Step 2: Calculate the energy consumed per day in kilowatt-hours (KWh). E = P × t E = 0.025 kW × 10 hrs/day E = 0.25 KWh/day Step 3: Calculate the cost of power used per day. Cost = E × Rate Cost = 0.25 KWh/day × 0.64 toea/KWh Cost = 0.16 toea/day The cost of power used by the DVD player is 0.16 toea/day. 0.16 toea/day That's 2 down. 3 left today — send the next one.