1. The following information is printed on an electrical appliance. 200 V and 6 A. If the appliance is used for 1 hour a day and the cost of electricity is N$ 1.995 kW/h, how much would it cost to use everyday.
2.The rating plate for an electric hair dryer is given: 1500 W, 200 V and 40 Hz. If the dryer is used for 30 minutes a day, and the cost of electricity is N$ 1.995/kWh, how much would it cost to use everyday?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.