A light rail commuter train draws 645 A of 590 V DC electricity when accelerating. A.What is its power consumption rate in kilowatts? B.How long does it take to reach 30.0 m/s starting from rest if its loaded mass is 4.50 104 kg, assuming 91.0% efficiency and constant power? Find its average acceleration. C.What is the ratio of the acceleration you found for the light rail train compares to what might be typical for an automobile?

Q: 6. The sticker on an appliance states that it draws 288 mA of current when powered by a 9 Volt…

A: Formula used for solving this problem    Power = Voltage * Current   Voltage = Current *…

Q: A 1.86-kg steel ball is dropped from a plane to an ocean. If the velocity of the ball just before…

A:

Q: appliances: (i) Three Air Conditioner of rating 2000 W for ten hours each day (ii) Two Electric…

A: Given that    Cost of unit electricity = 20 Bz / kwh  electric appliance  3 AC X 2000W X 10 hr = 60…

Q: A generator produces 250 kW of electric power at 7.2 kV. The current is transmitted to a remote…

A: Given that:-Power loss, Ploss= R·I2Generator current ( RMS Value), Igen=PgenVgen     then, Power…

Q: A typical candy bar contains approximately 250kcal. How long would this power a 60 W lightbulb?

A: Convert kilo calorie to joule. E=250 kcal4184 J1 kcal=1.046×106 J The relation between power and…

Q: A high-voltage transmission line carries 1 400 A at 600 000 V. What is the power carried by the…

A: The current is The voltage is

Q: Find the power supplied by the battery. 502 50V 200N 1002 252

A:

Q: A 2.21-kg steel ball is dropped from a plane to an ocean. If the velocity of the ball just before…

A: Given : m=2.21kg              u=1.67m/s     (initial velocity)              Fb=-2.65v…

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A:

Q: For the circuit shown in the figure, determine the magnitude of the currents I2, I3, and 14 passing…

A: Given:- A circuit is given as  The values are  ε1=24 V ε2= 3.0 V ε3= 22.5 V ε4= 1.50 V R1= 39.0Ω…

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A: Given that,The power of heater : P1 = 660 (W)The voltage of heater : V1 = 120 (V)The voltage drop :…

Q: An 1800 WW toaster, a 1300 W electric frying pan, and a 90 W lamp are plugged into the same…

A:

Q: How many kW.h of energy will a 400 W television set use in one month, if it is turned on for an…

A:

Q: 1. Suppose you left a 150-W light bulb on continuously for one hour.  If the electricity generation…

A:

Q: Compact fluorescent bulbs aremuch more efficient at producing light than are ordinary…

A: Given: Power consumption of a fluroscent bulb is Pf=23.0WCost of compact bulb is Cfb=11.0$Power of…

Q: A typical cost for electric power is $ 0.135 per kilowatt-hour. (a) Some people leave their porch…

A: Solution

Q: A 3 ampere current is flowing through a wire, with a long voltage of 5 volts. What is the power…

A: From question-Current, i= 3 ampereVoltage, V= 5 voltWe know that,Power, P= V×i          ......…

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A: Given that: The power of the heater is P1=660 W. The voltage of the heater is V1=120 V. The drop in…

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A: We have-Power of heater, P1= 660 WattVoltage of heater, V1= 120 VoltDrop-in voltage, V2= 80 VoltWe…

Q: a. What is the Output Voltage of a battery that expends 7.2J of energy in moving 1C of charge? b. A…

A: Given:  The energy in joules = 7.2 J Charge = 1 coulomb The output voltage of the battery =?

Q: A particular household uses a 1.9 kW heater 1.8 h/day ("on" time), four 100 W lightbulbs 6.0 h/day,…

A: Heater power= 1.9 kw= 1900 wTime = 1.8 h/d4 Bulbs power= 4*100= 400 wTime =6 h/dElectric stove…

Q: A 1.58-kg steel ball is dropped from a plane to an ocean. If the velocity of the ball just before…

A: Net force on the ball  F = mg-1.77v

Q: An 11.6 W energy efficient fluorescent light bulb is designed to produce the same illumination as a…

A: The energy is a scalar quantity , which represents the ability to do a certain work or process . The…

Q: How much time does it take for 1.0 C to flow through each of the following circuit elements? A.A 60…

A:

Q: appliance used up 33.0 kJ of energy for 60 seconds at a 220 V potential difference. a. How much…

A: Given Energy used E = 33 kJ  = 33 × 103  J Time taken t = 60 sec Voltage V = 220 V

Q: A 17.7-ohm electric blanket, a 25.9-ohm TV, and a 36.8-ohm light bulb are connected in parallel. A…

A: Solution: Given: R1 = resistance of electric blanket = 17.7 Ω R2 = resistance of TV = 25.9 Ω R3 =…

Q: 6. W obwodzie poniżej U = 220 V, R₁ = 5 2, R₂ = 50 2, R₂ = 6 k. Oblicz moc P₁ rozpraszaną w…

A:

Q: A particular household uses a 1.9 kW heater 1.8 h/day ("on" time), four 100 W lightbulbs 6.0 h/day,…

A: Heater power= 1.9 kw= 1900 wTime = 1.8 h/d4 Bulbs power= 4*100= 400 wTime =6 h/dElectric stove…

Q: 3. A CFL or compact fluorescent lamp uses less energy that its equivalent incandescent bulb. How…

A:

Q: One day on a particularly stormy night, a science student is watching the rain and thinking about…

A: Given: The charge is 21 V. The potential difference is 15050 V.

Q: 2. A 350 W laptop is used daily for 9 hours in teaching. How many kWh are consumed by the laptop in…

A: Answer:-  Given    Power (P) = 350 W = (350)/(1000) = 0.35 kW     Time taken for 9 hours in 30…

Q: What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock…

A: Given data: Power, P=2.00 W Time taken, t=540 days

Q: A 660 W electric heater is designed to operate from a 120 V source. If the source voltage drops to…

A: The maximum power that can be dissipated by the electric heater, P=660 W The heater is designed to…

Q: . An electric water heater requires 1100 W of power. Electricity costs 8 cents per kilowatt hour.…

A: Given Power of an electric heater = P = 1100 W = 1.1 kW Cost of electricity = 8 cents/kWh We have to…

Q: A 1750 W radiant heater is constructed to operate at 120 V. What is the current in the heater when…

A:

Q: 0. An electrie power station is producing 1,40 x 10 W of poser tat is to be A to na town located…

A:

Q: A house use the following electric appliances: ) Four Air Conditioner of rating 2000 W for ten hours…

A:

Q: A 9 W led lightbulb emits the same light as a 60 W standard lightbulb. If a power company charges 10…

A:

Q: a. What voltage is involved in a 1.44-kW short circuit through a 0.100- 2 resistance?

A: Given that-Dissipated Power, P= 1.44 kW=1.44×103 WattResistance, R= 0.100 ΩWe know that-Dissipated…

Q: A typical cost for electrical power is $0.120 per kilowatthour. Some people leave their porch light…

A: Given data P=75 WC=$ 0.12 /kWh

Q: An 11.0-W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a…

A: Solution:-Given that11 W energy-efficient fluorescent light bulb40 W energy-efficient incandescent…