Solve the following problems with complete solutions and units using 2 decimal digits: The resistance of a given e electric device is 46 Ω at 25°C. If the temperature coefficient of resistance of the material is 0.00454 at 20°C, determine the temperature of the device when its resistance is 92 Ω
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- Solve the following problems with complete solutions and units using 2 decimal digits: A 1,000 ft. of aluminum wire, whose diameter is 0.365 in., has a resistance of 0.13 Ω at 20°C. What is its percent conductivity?Should You Buy an Electric Car? Do the math. This article says that the EPA rating for the Nissan LEAF is exactly 30 kWh per 100 miles Assume you drive 15,000 miles per year Assume you pay 7.8 cents per kWh (kilowatt-hour) Assume your current vehicle gets 32 miles per gallon and gas cost $2.50 per gallon Which is cheaper to drive, your current vehicle or the Leaf?* What else should you consider before purchasing an electric vehicle? Ready to decide? Make an argument for either keeping your current vehicle or for getting an electric vehicle. Don't have a car? Make an argument for using public transportation and ride-sharing services.For an electrical component, the formulas for charge and voltage are given below. A is 9 coulombs, B is 12 seconds, C is 3 volts, and D is 24 seconds. Give the power of this component at t = 7 sec. You must round your answer to the nearest thousandth and give your answer as an integer followed by the appropriate metric prefix and the letter that represents the units of power.
- For an electrical component, the formulas for charge and voltage are given below. A is 9 coulombs, B is 12 seconds, C is 3 volts, and D is 24 seconds. Give the total energy of this component from 0 to 4 sec. You must round your answer to the nearest integer and give your answer as an integer followed by the appropriate letter that represents the units of energy.The hull of a boat has a volume of 150 m3, and the total mass of the boat when empty is 8560 kg. Determine how much load this boat can carry without sinking when (a) in a fresh water lake and (b) in seawater with a specific gravity of 1.0The resistance of a coil aluminum wire at 21OC is 210Ω. The temperature of the wire is increased and the resistance rises to 240Ω. If the coefficient of resistance of aluminum is 0 .0039/OC at 21OC, determine the temperature to which the coil has risen.
- Suppose the cost of an incandescent bulb is 28 cents and that electricity costs 10.5 cents/kWh. Compact fluorescent lightbulbs (CFL), while they are more expensive, use 1/10 of the power for the same amount of illumination. What would be the maximum cost (in dollars) of a CFL such that the total cost (investment plus operating) would be the same for both CFL and incandescent 60 W bulbs? Assume both lightbulbs run for 1000 h.complete solution. Fix yourcalculator in four decimal places and show your final answers in FOUR DECIMAL places. 1. The resistance of the wire used for telephone is 35 Ω per kilometre when the weight of the wire is 5 kg per kilometre. If the specific resistance of the material is 1.95 x 10^-8 Ω-m, what is the cross sectional area of the wire? What will be the resistance of a loop to a subscriber 8 km from the exchange if wire of the same material but weighing 20 kg per kilometre is used?Please provide Handwritten answer. Consider a Si sample at 300 K where the total, sum of drift and diffusion current densities, of electrons is -40 A/cm2. The electron mobility is 960 cm2/V-sec throughout the sample, and the electron concentration varies as n(x) = 1016 exp (-x/0.0012) cm-3 (note that x is measured in centimeters). Determine the Electric field as a function of x which must exist in the sample
- A specification sheet of a smart meter states that its rated current is 100 A and power dissipation is 3 W. It employs a current-sensing resistor of 200 μ. When the load current is at the rated value of the meter, calculate the power dissipation in all the other components of the meter.For an electrical component, the formulas for charge and voltage are given below. A is 9 coulombs, B is 12 seconds, C is 3 volts, and D is 24 seconds. Give the current of this component at t1 = 8 sec. You must round your answer to the nearest thousandth and give your answer as an integer followed by the appropriate metric prefix and the letter that represents the units of current.The resistance of a given device is 46ohms at 25degrees celcius. If the temperature coefficient of resistance of the material is 0.00454 at 20degrees celius, determine the temperature of the device when its resistance is 92ohms.