text: my physics hw!! help!? you leave your 50w portable color tv on for 6 hours during the day and evening, and you do not pay attention to the cost of electricity. if the dorm charged you for your electricity use and the cost was $0.1/kw x h, how would be your monthly (30day) bill? answer in units of dollars. 50w * 6 hours = 300 watt-hours or 0.3 kwh per day  in a 30 day period, you would consume 0.3 * 30 kwh, or 9 kwh  at $0.10 per kwh, that would equate to $0.90 per month