Answered: 2. Lightbulb A was found out to give… | bartleby

Related questions

Question

2. Lightbulb A was found out to give 30.0W of power, producing the same brightness as
lightbulb B operating at 95.0W. The lifetime of A is 9,000 hours and can be bought at
Php229.00. B has lifetime of 750 hours and can be bought at Php39.00. Which bulb is
more efficient in energy saving? Determine the total amount saved when choosing the
efficient bulb over the same period of time. Assume that Meralco charges Php 9.65 per
kWh.

Expert Solution

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

One heater uses 370 W of power when connected by itself to a battery. Another heater uses 260 W of power when connected by itself to the same battery. How much total power do the heaters use when they are both connected in series across the battery? P1 P2 Number i ww First heater V ww Second heater V Units www Both heaters V
Problem 6: Suppose the cost of an incandescent bulb is 23 cents and that electricity costs 12 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.
A 9 W led lightbulb emits the same light as a 60 W standard lightbulb. If a power company charges 10 cents per kW.h, then how much money do you save by using the led lightbulb instead of the standard lightbulb for 30 days?
Midterm Practice A conventional light bulb running at 40 W for 4 hours per day. How much energy does it spend in one month? Select one: a. 480.0 kwh b. 4.800 kwh c. 0.480 kwh d. 4800 kwh e. 48.00 kwh
In recent years, practical hybrid cars have hit the road—cars in which the gasoline engine runs a generator that charges batteries that run an electric motor. These cars offer increased efficiency, but significantly greater efficiency could be provided by a purely electric car run by batteries that you charge by plugging into an electric outlet in your house.But there’s a practical problem with such vehicles: the time necessary to recharge the batteries. If you refuel your car with gas at the pump, you add 130 MJ of energy per gallon. If you add 20 gallons, you add a total of 2.6 GJ in about 5 minutes. That’s a lot of energy in a short time; the electric system of your house simply can’t provide power at this rate.There’s another snag as well. Suppose there were electric filling stations that could provide very high currents to recharge your electric car. Conventional batteries can’t recharge very quickly; it would still take longer for a recharge than to refill with gas.One possible…
Part C Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity. According to one study of these bulbs, a compact bulb that produces as much light as a 100 W incandescent bulb uses only 23.0 W of power. The compact bulb lasts 10000 hours, on the average, and costs $12.00, whereas the incandescent bulb costs only $0.74, but lasts just 750 hours. The study assumed that electricity cost $0.090 per kilowatt-hour and that the bulbs were on for 4.0 h per day. How much do you save over 3.0 years if you use a compact fluorescent bulb instead of an incandescent bulb? Express your answer in dollars. $ Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining Part D What is the resistance of a "100 W" fluorescent bulb? (Remember, it actually uses only 23 W of power and operates across 120 V.) Express your answer in ohms. ? R = Submit Request…
When running on its 11.4 V battery, a laptop computer uses 8.3 W. The computer can run on battery power for 8.5 h before the battery is depleted. Part A. What is the current delivered by the battery to the computer?Express your answer with the appropriate units. Part B. How much energy, in joules, is this battery capable of supplying?Express your answer in joules. Part C. How high off the ground could a 75 kg person be raised using the energy from this battery?Express your answer with the appropriate units.
Suppose a battery operates a 2.25 W electric clock for 19.5 months. 1. What is the available energy content, in joules, of the battery? 2. How many years can a battery that supplies 7.75 × 104 J run a pocket calculator that consumes energy at the rate of 1.05 × 10-3 W?
Q7.1 The circuit shown below is an RC circuit that consists of R1 = 100 kn, R2 = 200 kn, R3 = 300 kn, C = 5.00 μF, and E = 9.00 V. When the switch is closed at t = 0, the capacitor starts from an uncharged state. The following inquiries relate to the performance of the circuit. a. What is the RC circuit's time constant? b. When will the capacitor be 80% charged? c. At that point, what is the current passing through the R3 resistor? E S R₁ R3 R₂ www