Q: An electric motor is almost identical in construction to an electric generator, but the motor…
A: Electric generator converts mechanical energy in to Electrical energy but Electrical motor converts…
Q: What is the cost of operating a 5.00 W electric clock for a year if the cost of electricity is…
A:
Q: Four light bulbs, rated at 100 W, 75 W, 50 W and 25 W each, are in parallel. What is the total power…
A: Given Data, Power of the four bulbs are = 100 W, 75 W, 50 W, 25 W
Q: You place an ice cube in a microwave oven. If it requires 32,195 J to melt the ice cube and the oven…
A: The equation for the power delivered to the microwave oven. P = Q/t the power is directly…
Q: A microwave oven has a power requirement of 1,251 W. A frozen dinner requires 6.8 min to heat on…
A: (a) Energy used in kWh
Q: What is the average wattmeter reading of one wattmeter method? O a. P1+P2 O b. Total power /2 O c.…
A: In one wattmeter method, Total power = average wattmeter reading x 3
Q: Q1/ Derive the power (watt) into its the basic S.I units?
A:
Q: Which of the following is not the unit of energy .A kg m .B kcal .C Watt .D Watt hours
A:
Q: A microwave oven has a power requirement of 1,255 W. A frozen dinner requires 4.2 min to heat on…
A: Given,
Q: Which of the following devices converts electric energy into mechanical energy?
A: The given statement is Device which converts electric energy into mechanical energy?
Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…
A:
Q: cost of electricity
A:
Q: How long would it take a 600 W electric motor to do 17,500 J of work
A: Given data: Power (P) = 600 W Work (W) = 17,500 J Required: Time (t)
Q: A lightbulb has an average power output of 125 watts. If the lightbulb is left on for an hour, what…
A: Given: The power output of the lightbulb is 125 W. The running time of the bulb is 1 hour.…
Q: Which one of the following is NOT the unit of power? Watts Íb/s Nm/s O J/s
A: Power is rate of change of energy.
Q: energy costs
A:
Q: What is the power of a light bulb if it uses 120J of energy in 4.0 seconds? Your answer: O 0.033 W O…
A: Given data : Energy used by light bulb, Time taken,
Q: A school is paying $0.12/kWh for electric power. To reduce its power bill,the school installs a wind…
A: Power generated per year
Q: Quèstion 13 kg m? The Sl unit of power is 3 True False
A: Two types of quantities are found- fundamental and derived quantities. Fundamental quantities are…
Q: maximum power transfer
A:
Q: An electric water heater consumes 7.13 kW for 3.85 h per day. What is the cost (in dollars per year)…
A: An electric water heater consumes 7.13 kW for 3.85 h per day. In a year, the heater consumes…
Q: if you turn on a 6w lamp how many seconds was it on if you applied 36000 j to it?
A: Power (P) = 6w Energy (E) = 36000J
Q: 93. How much power is required to do 180 J in 2.4s? . O a. 178 W O b. 430 W O c. 7.5 W O d. 75 W
A: Given: The energy required is 180 J. The time interval is 2.4 s.
Q: What is the work that a 256 W electric grinder can do in three minutes?
A: Solution-: power , P = 256 watt Time , t = 3 minute t = 3*60 second t = 180 second Work W = ?
Q: An electric clothes dryer is rated at 2,300 W. How much energy does it use in 35 min? kWh
A:
Q: A 1200W microwave oven transforms 1.8 x 10^5 J of energy while reheating some food. Calulate how…
A:
Q: Lightbulb A was found out to give 30.0W of power, producing the same brightness as lightbulb B…
A:
Q: An electric water heater consumes 5.63 kW for 2.85 h per day. What is the cost (in dollars per year)…
A: Given: The heater consumption of electricity is 5.63 kW for 2.85 h per day. The cost of electricity…
Q: this is a 23 watt energy efficient light bulb (1bulb) which cost 6.00.the retail price of…
A: The energy consumed by a device is given by E = P×t, where P = the power of the device t = time
Q: A person uses a 3 kW electric fire for 3 hours and a 2 kW heater for 5 hours. What is the total cost…
A:
Q: The units of Power is Select one: a. N.sec b. J/sec c. J.sec d. N/sec e. J/sec2
A: solution as
Q: 68. What is the cost of operating a 3.00-W electric clock for a year if the cost of electricity is…
A: Given data: Power (P) = 3.00 W Time (t) = 1 year Cost of electricity = $0.0900 per kW.h Required:…
Q: A dog chasing a ball through a field has 7,500 J of kinetic energy. What is the dog's mechanical…
A: Mechanical energy is addition of kinetic energy and potential energy.
Q: A lamp consumes 1200 J of electrical energy in 13 s. What is it's Power ?
A: Given data: Energy (E) = 1200 J Time (t) = 13 s Required: Power (P)
Q: 40.) Power is the rate at which energy is transferred. work is the process of transferring energy…
A:
Q: ED light bulb uses energy of 3W. What is the electrical energy is used if the light is on for 2…
A:
Q: A certain hand crank generates power at 75 W how long will it need to run to fully charge a battery…
A:
Q: You place an ice cube in a microwave oven. If it requires 32,165 J to melt the ice cube and the oven…
A: Given data: Energy (E) = 32,165 J Power (P) = 98 W Required: Time in minutes
Q: A lamp consumes 500 J of electrical energy in 20 sec. What is the power of the lamp?
A: Power of the lamp is calculated by the formula: Power = Energy consumed per unit time Power =…
Q: n electric clothes dryer is rated at 3,500 W. How much energy does it use in 25 min
A: Given Power of electric clothes dryer is P=3500 W…
Q: An electric clothes dryer is rated at 3,400 W. How much energy does it use in 30 min?
A: power of electric cloth dryer (P) = 3400 W time (t) = 30 min
Q: The motor is used to convert to a. mechanical energy, electrical energy O b. electrical energy,…
A: In this problem, it is asking about to Motor.
Q: What energy is produced by a 200 W light bulb lit for 2.7 hours? Answer in units of J.
A: Power is defined as the rate at which energy is expensed or rate of doing work. P=Et
Q: You are tasked with designing a new motor that is based off of an older model. The new model…
A: Given data: Work done by new model (W') = 1.5W Time taken by new model (t') = 0.5t Required: New…
Q: 6. Which is not a unit of power? a) Joule per second b) kilowatt-hour c) newton-meter per second d)…
A:
Q: A light bulb has a power of 300W. What is the energy dissipated by it in 5 minutes? Select one: a.…
A:
Q: Which of the following is NOT a correct unit for energy? (A) newton-meter B) joule watt (D) erg
A: Energy means , ability to do the work . Types of energy - Mechanical energy , electrical energy ,…
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