How many coulombs of charge are deposited on the plane

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1. A lightning bolt strikes an airplane with 30 kA for 2 ms. How many coulombs of charge are deposited on the plane?

2. A 1.8-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents/kWh, what is the cost of its operation for 30 days?

3. A utility company charges 8.5 cents/kWh. If a consumer operates a 40-W light bulb continuously for one day, how much is the consumer charged?

4. A 1.2-kW toaster takes roughly 4 minutes to heat four slices of bread. Find the cost of operating the toaster once per day for 1 month (30 days). Assume energy costs 9 cents/kWh.

5. A 12-V car battery supported a current of 150 mA to a bulb. Calculate:

(a) the power absorbed by the bulb,

(b) the energy absorbed by the bulb over an interval of 20 minutes.

Reference no: EM131165048

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