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- So I'm having a hard time in calculating the power at t=9sA typical incandescent reading lamp runs at 60W. If it is lefton constantly, how much energy (J) is consumed per day,and what is the weekly cost if energy is charged at a rate of12.5 cents per kilowatthour?Can you show me how to work this? I’m thinking I’m getting confused on the units. Thanks!
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Explain what current, resistance, and voltage are.(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Saltwater contains an equal number of positive and negative ions. When saltwater is flowing through a pipe, does it constitute an electric current?Check Your Understanding How would the strategy change to calculate the at a point a distance z above of the finite line segment?
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A solid metal cylinder has a certain resistance. It is then heated and carefully stretched to form a longer, thinner cylinder. After it cools, will its resistance be the same as, greater than, or less than what it was before? Explain our choice.A 400-W computer (including the monitor) is turned on for 8.0hours per day. If eletricity costs R1.60per kWh, how muh does it cost to run the computer annually for a typial 365-day year?A certain house uses an average power of 485 Watts all day, everyday, for a 31 day month. If the energy costs are $0.21 per KW-hour, what is the house’s energy bill for this month? (Your answer is in dollars, so put $ for the units. Also, you'll round your final answer to the nearest cent.)
- For the loop shown in Fig. 6-3, what isVtremf=? N = 20, b = 10 cm, and ω = 10^6 rad/s ...Typically given as IDSS = 10 mA and VGS(off) = -8 V for a JFET. Using these values, determine the drain current for VGS = -2 V.Suppose the energy transferred to a dead battery duringcharging is W. The recharged battery is then used until fullydischarged again. Is the total energy transferred out of thebattery during use also W ?