Bulb A, B, C are 60 W lightbulbs. Bulb D is 100 W lightbulb. Which light bulb will be the dimmest? A e C = D O A B O both C and D D O C O O B e
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- Construct Your Own Problem Consider a battery used to supply energy to a cellular phone. Construct a problem in which you determine the energy that must be supplied by the battery, and then calculate the amount of charge it must be able to move in order to supply this energy. Among the things to be considered are the energy needs and battery voltage. You may need to look ahead to interpret manufacturer’s battery ratings in ampere hours as energy in joules.Filament light bulbs, also called incandescent bulbs, operate by passing an electrical current through a thin wire (filament) which gets very hot and glows. As well as emitting visible light, 95% of the energy is emitted in the form of thermal energy which is considered wasted. 1. State the efficiency of a filament light bulb.2. A heater uses a filament of resistance 10Ω and operates at a voltage of 120 V. If the efficiency of the heater is 40%, then how many kg of water at 25 temperature can be boiled for 5 minutes? Solve with the full step thank u
- A 60 W lightbulb and a 100 W lightbulb are placed in the circuit shown in (Figure 1). Both bulbs are glowing. Part A: Calculate the power dissipated by the 60 W bulb. Part B: Calculate the power dissipated by the 100 W bulb.How much power is dissipated by the 12 Ω resistor in the figure?Express your answer in watts. How much power is dissipated by the 15 Ω resistor in the figure?Express your answer in watts.A microwave oven has a power requirement of 1,251 W. A frozen dinner requires 6.8 min to heat on full power. (a) How much electrical energy (in kWh) is used? kWh(b) If the cost of electricity is 14¢ per kWh, how much does it cost to heat the dinner? (Do not round your final answer. Fractional cent values are acceptable.)
- PHYSICAL SCIENCE PLEASE SIMPLIFY A factory has a ventilation system with a fan motor that has a 2½ horsepower motor. The fan must run continually, 24 hours a day, seven days a week. Assume a 30-day month and a cost of $0.16 per kilowatt-hour (kWh). What is the monthly cost to operate this system for the factory? (1 horsepower = 746 W)Calculate the number of kilowatt-hours (kW-hrs) consumed in a year by a 750-Watt hair dryer that is turned on for one hour per day.If electrical energy costs $0.12 per kilowatt-hour, how much do the following events cost? (a) To burn a 80.0-W lightbulb for 24 h.
- Below are four variations of the formulas for thermal energy which describes the amount of heat being generated by a circuit, such as this light bulb which has a resistance of 100 ohm and operates under 9 volts. Number the formulas from 1 to 4. The questions below (1, 2, 3, and 4) correspond to these formulas. Select the best answer. Group of answer choices 1. If the lightbulb has a fixed power rating, what parameter determines the amount of thermal energy (heat) generated? 2. The light bulb's power dissipation (heat generated) is the product of 3. What parameter, if doubled, will quadruple the bulb's thermal energy? 4. What parameter, if doubled, will halve the bulb's thermal energy? Options: current and voltage time resistance currentCalculate the joules of electrical energy There is a air conditioner that uses 6380 watts for 2 hours calculate the joules of electrical energy?Calculate the energy work needed of from an electrical socket to keep a 30 W lightbulb turned on for 10 seconds.