An electric stove operates on a larger 220 V line. How much power is needed to cook a pizza if 0.45 A of current is used

40,346 questions
1. physics

An electric stove operates on a larger 220 V line. How much power is needed to cook a pizza if 0.45 A of current is used.

asked by Victoria on May 20, 2014
2. physics

1. x-ray machine operates at 200 kv with a current of 10 mA. The power mus be produced by a transformer which raises the voltage from 220 volts to 200 kilovolts. The power going into and out of the transformer is the same. How much current must flow in the

asked by mitch on November 17, 2006
3. Physics

Which of the following is an appropriate measure of electric power on a toaster label? A. 110 V B. 2.0 A C. 220 W D. 55 Ω

asked by Me and I on June 3, 2014
4. thermochemistry

. Mountain climbers often brew tea by melting snow, which they heats over a stove. Our stove burns butane (C4H10), which has a heat of combustion of -2878 kJ/mol. The temperature of the snow is initially at -20 °C, and we need 80 °C water to brew tea. a.

asked by David on April 9, 2017
5. Physics

An electric kettle operates at 110V. What is the resistance of the kettle if the power is 1.5kW? 8.1 Ω 1.4 Ω 81 Ω 14 Ω I'm stuck between A and B

asked by Fleur on October 22, 2012
6. Physics

An electric kettle operates at 110V. What is the resistance of the kettle if the power is 1.5kW? 8.1 Ω 1.4 Ω 81 Ω 14 Ω Both A and B seem reasonable, and I'm leaning more towards B. Help..?

asked by Herp on October 21, 2012
7. Physics

Power transmission lines often use a form of electric current called alternating current, but in many regions, such as the Province of Quebec, high-voltage direct-current lines are used instead. Direct current is the kind of electric current you are

asked by Sheree on May 31, 2012
8. Pre algebra

mr. and mrs.green received a discount of \$87 on a new electric stove. the discount was the result of a 1/4 of sale. what was the sale price of the stove?

asked by Ashlee on February 13, 2012
9. annie

You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11m above the ground. The local power company tells you that the line operates at 13kV and provide a maximum of

asked by physics help on December 14, 2009
10. Physics

am i correct? An electric oven has a resistance of 10.0Ω and a voltage of 220 V. How much current does it draw? A. 2.2 A B. 22 A

asked by Me and I on June 3, 2014
11. College Physics

On average, an electric water heater operates for 3.4h each day. If the cost of electricity is \$0.3 kWh, what is the cost of operating the heater during a 30-day month? The power of a typical electric water heater is 4500 W. Cost= Dollars What is the

asked by Lanise on February 6, 2010
12. Physics

Am i correct? Which of the following is a reasonable power rating on an electric oven? 220 V 8.0 A

asked by Me and I on May 23, 2014
13. Physics

A black wood stove with surface area 4.6 m^2 is made from cast iron 4.0 mm thick. The interior wall of the stove is at 650 C, while the exterior is at 647 C. Part A What is the rate of heat conduction through the stove wall? Part B What is the rate of heat

asked by Physics on September 15, 2017
14. Applied Physics

Which is a vector quantity? electric energy electric charge electric power electric field intensity

asked by Scott on May 29, 2011
15. Physics

A camera flashtube requires 5.0J of energy per flash. The flash duration is 1.0 ms. (a) what power does the flashtube use while it's flashing? (b)If the flashtube operates at 200V, what capacitance is needed to supply the flash energy? (c) If the flashtube

asked by Britanee on March 18, 2012
16. Science/Astronomy

Large geomagnetic storms can cause surges of electric current here on Earth. What is the MOST LIKELY result of a large surge in electric current? F. power outages G.better TV reception H. cheaper electric power I. Local Group galaxy What is the answer???

asked by Austin on April 13, 2010
17. physics

Two charges of -5 x 10(power -6) C and 3 x 10(power -6) C are placed at distance of 200mm from each other , find point on the line joining the charges at which electric field is zero.

asked by paula on March 10, 2010
18. Environmental Science

I'm confused about how hybrid cars work...is gas used to accelerate, or is that electric power? So on highways, they just rely on electric power, right?

asked by Heather on April 13, 2011
19. Science

Oregon and Washington generate far more hydro-electric power than most states. How does all this hydro-electric power help keep our electric bills low (half the cost of electricity in many states)?

asked by Kaai97 on June 11, 2016
20. science

explain to to transfer heat from a electric stove?

asked by Aisha on June 22, 2016
21. physics

An electric power line carries a current of 1600 A in a location where the earth's magnetic field is 4.0*10-5 T. The line makes an angle of 75° with respect to the field. Determine the magnitude of the magnetic force on a 130 m length of line.

asked by rick on February 10, 2008
22. physics

When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines

asked by sweety on April 15, 2009
23. kw university

You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11 above the ground. The local power company tells you that the line operates at 16 and provide a maximum of 83 to

asked by mma on May 20, 2012
24. Multiple Choice

Physics 2. Which of the following is equivalent to one ampere? (Points : 1) 10 s/10 C 10 C/10 m 1.5 C/1.5 s 15 C/10 s Question 3.3. A stream of moving charges results in a current of 5.6 A. How long does 116 C of charge take to flow past a fixed point?

asked by Steven on May 8, 2014
25. Algebra 1

The size of a certain cell is 2.5 * 10 to the -9 power m. Another cell is 1.5 * 10 to the 3rd power larger. How large is the larger cell in scientific notation? my answer is 3.75 * 10 to the -6 power m

asked by Steve on January 14, 2015
26. physics

A large open loop made of metal is constructed below a high voltage (AC) power line. a) Can this loop be used to draw power from the lines? Where would the energy come from and how would it work? b) If no one actually saw the loop, would the power company

asked by Sara on April 29, 2009
27. Science

A cold cast iron skillet is placed onto a stove top. When the stove is turned on, the skillet becomes very hot. Why does the skillet become hot? A) The skillet is losing energy (heat) to the stove. B) The stove is gaining energy (heat) from the skillet. C)

asked by Anonymous on December 12, 2017
28. Math

Which expression represents the larger number? A. 40.1 x 10 to the -6 power B. 4.1 x 10 to the -7 power C. 0.411 x 10 to the -6 power D. 0.04001 x 10 to the -5 power I got A, but I'm not quite sure if it's the right answer :/

asked by Melanie on March 28, 2011
29. science

An electric stove transfers heat too a pot by a.) conduction b.) convection c.) radiation d.) friction

asked by alyssa on May 21, 2015
30. electric

When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines

asked by sweety on April 14, 2009
31. Physics

An electric current of 50 +/- 1 mA flows through an electric bulb filament that has a resistance of 10 +/- 2 ohm. Estimate the power dissipated by the filament and the associated error in the power.

asked by Robert on January 26, 2012

this device is a burner from an electric stove. it is used to transfer heat to a pot by a. conduction b. convection c. radiation I think c.

asked by #1Student on May 29, 2014
33. physics

please help The power rating of an electric motor which draws a current of 5 amperes from a 240-volt line is? a. 12.0 kW b. 1.2 kW c. 48.0 kW d. 4.8 kW

asked by pub on March 24, 2016
34. science.......

An electric bulb is marked 220v60w. An ammeter in the circuit shows the bulb uses a current of 0.2727A. The bulb burns for an hour. Calculate the following: A. The electrical energy consumption B. The cost for the bulb to burn for one hour if the cost of

asked by owamiii on April 7, 2015
35. Dynamics

It takes 16s to raise a 2800lb car and the supporting 650lb hydraulic car-lift platform to a ht of 6.5 ft. Knowing that the overall conversion efficiency from electric to mechanical power for the system is 82% determine a) the average power output

asked by Amelia on February 22, 2013
36. electric

When an electron moves from A to B along an electric field line in Fig. 24-29, the electric field does 3.66 x 10-19 J of work on it. What are the electric potential differences (a)VB - VA, (b)VC - VA, and (c)VC - VB? in the picture there r four field lines

asked by sweety on April 14, 2009

what is the importance of speaking your mind? It depends on your mindset. Some have power needs, some have attention needs, some have emotional needs to hear themselves, and some have mouths that just seem to be connected to a Duracell battery. One can not

asked by anonymous on January 25, 2007
38. Physics

Hot air rises over a heated stove element. The wall behind the stove appears to shimmer. Explain.

asked by Susan on February 15, 2011
39. Physics

A ski rope operates on a 15° slope of length 65.0 m. The rope moves at 9.7 km/h and provides power for 40.0 riders at one time, with an average mass per rider of 70 kg. Estimate the power required to operate the tow

asked by Anonymous on December 2, 2015
40. math

What happens to y as x gets larger? What happens to x as y gets larger? d) Given a line containing the points (1,4), (2,7), and (3,10) determine the slope-intercept form of the equation, provide one additional point on this line, and graph the function.

asked by joni on January 12, 2007
41. urgent physics

A power line carries a current of 110 A at a location where the Earth's magnetic field has a magnitude of 0.37 Gauss (0.37·10-4 T) and points due north, very nearly parallel to the ground. Find the direction and magnitude of the magnetic force exerted on

asked by sonia on November 4, 2011
42. Antennas

Consider a pocket transistor radio receiver at 1MHz: a) What is the effective aperture of its ferrite rod antenna (assuma the antenna has a sin^2 alpha power pattern)? b) At 10km from a 10KW (Equivalent Isotropic Radiated Power), 1MHz broadcasta station,

asked by Arnau EC on April 12, 2018
43. Antennas

Consider a pocket transistor radio receiver at 1MHz: a) What is the effective aperture of its ferrite rod antenna (assuma the antenna has a sin^2 alpha power pattern)? b) At 10km from a 10KW (Equivalent Isotropic Radiated Power), 1MHz broadcasta station,

asked by Arnau EC on April 12, 2018
44. Math

How do i work this proportional reasoning out? Beth is buying a stove that costs \$575. If the sales tax is 7% what is the total amount she will pay for the new stove?

asked by Amy on January 25, 2016
45. Physics

A nuclear power plant has an electrical power output of 1200 MW and operates with an efficiency of 31%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 x 10^6 kg/s, what is the rise in temperature of the flowing water?

asked by Stefan on December 4, 2010
46. English composition

I also bought a timer. After I turn thes witch to the right, clockwise, if I put the point on the switch to the time, it will ring after the time. We don't need a battery in this product, for it has a mechinacal spring. It is useful when you cook instant

asked by John on January 3, 2008
47. Physics

A nuclear power plant has an electrical power output of 1200 MW and operates with an efficiency of 31%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 multiplied by 10^6 kg/s, what is the rise in temperature of the

asked by Chelsea on December 3, 2010
48. A.S.U

A ski tow operates on a slope of angle 15.4 ∘ of length 320 m . The rope moves at a speed of 12.5 km/h and provides power for 50 riders at one time, with an average mass per rider of 73.0 kg . Estimate the power required to operate the tow.

asked by Moe on June 13, 2016
49. Physics

A nuclear power plant has an electrical power output of 1200 MW and operates with an efficiency of 31%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 multiplied by 10^6 kg/s, what is the rise in temperature of the

asked by Chelsea on December 3, 2010
50. physics

A nuclear power plant has an electrical power output of 1900 MW and operates with an efficiency of 32%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 106 kg/s, what is the rise in temperature of the flowing water? °C

asked by Annette on April 29, 2013
51. maths

Mr. Jones bought a stove at a discount of 20%. The price of the stove is \$4,000. a)Calculate the discount in dollars. b)What was the cost of the stove after the discount? c)Mr. Jones paid VAT of 12 1/2% on the discounted price. How much VAT did she pay?

asked by indira on May 5, 2017
52. HCR/220

HCR 220 week 6 Applying Level II HCPCS Modifiers can anyone help with this Portable home oxygen unit Emergency ambulance transport and extended life support Non-electric wheelchair Intravenous catheter line Laboratory certification, cytology specimens

asked by Susan on March 22, 2011
53. physics

An average of 120KW of electric power is sent to a small town from a power plant constant 10km away.the transmission lines have a total resistance of 0.4ohms, calculate the power loss if the is transmitted at 240v.

asked by poppy on April 28, 2019
54. Physics

A ski tow operates on a slope of angle 14.9∘ of length 320m . The rope moves at a speed of 12.5km/h and provides power for 55 riders at one time, with an average mass per rider of 68.0kg .Estimate the power required to operate the tow.

asked by Anonymous on May 9, 2014
55. Riddle HELP

There are tree stoves. A glass stove, a brick stove, and a wood stove. You only have a match. Which do you light up first? Two cops walked into a room with no windows and found a dead man who obviously hung himself from the ceiling, though they couldn't

asked by lizzy on October 29, 2011
56. thermodynamics

A heat engine, X, operates between a reservoir at 1000˚C and a body at 600˚C. Heat transfer to the heat engine is 1000 kJ and work output is 220 kJ. Another Engine, Y, operates between, the body at 600˚C and the atmosphere at 27˚C. Heat rejected to the

asked by manigandan on December 27, 2016

Can you check the following? Add a comma if needed to words in () in following sentences. 1. She was a (beautiful gentle) woman. Ans: beautiful, gentle 2. "Come now", said Scully sharply to the (three seated) men, "move up and give us a chance at the

asked by Alexis on January 13, 2015
58. Physics II

When an electron moves from A to B along an electric field line, the electric field does 3.94 x 10^-19 J of work on it. What are the electric potential differences (a) Vb - Va, (b) Vc - Va, and (c) Vc - Vb?

asked by Scott on February 13, 2011
59. Chemistry Help

How many milliliters of 0.534 M Ba(OH)2 solution are needed to completely neutralize 34.5 mL of 0.220 M HBr solution? The reaction is Ba(OH)2(aq) + 2HBr(aq) → BaBr2(aq) + 2H2O(l) I did 0.0345 * 0.220 = 0.00759 Moles of HCl =2*0.00759= 0.01518

asked by Matthew on February 27, 2015
60. Physics

Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 8 mC moves from a distance of 9 cm to a distance of 17 cm. How much work is done by the electric field? Hint: The

asked by Susie on February 12, 2010
61. Physics

Suppose there are two transformers between your house and the high-voltage transmission line that distributes the power. In addition, assume your house is the only one using electric power. At a substation the primary of a step-down transformer (turns

asked by Busker on October 22, 2012
62. Physics

An electrical generating plant operates at a boiler temperature of 220 deg C and exhausts the unused heat into a nearby river at 18 deg C. what is the maximum theoretical efficiency of the plant?

asked by R on November 19, 2012
63. Physics

A flat thin non-conducting ring has an inner radius R1 and an outer radius R2 . The disk is uniformly charged with charge per unit area σ(>0) . (a) What is the electric field at the center, P, of the ring? Express your answer in terms of the following

asked by Anonymous on February 21, 2013
64. Physivs

A flat thin non-conducting ring has an inner radius and an outer radius . The disk is uniformly charged with charge per unit area . (a) What is the electric field at the center, , of the ring? Express your answer in terms of the following variables, if

asked by P on February 24, 2013
65. physics

Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 12 mC moves from a distance of 7 cm to a distance of 18 cm. In mJ, how much work is done by the electric field?

asked by Anonymous on February 17, 2011
66. Physics

Calculate the power of a hair dryer that operates on 120V and draws a current of 10 A.

asked by jamya on May 12, 2013
67. Physics

What is the peak current through a 400–W room heater that operates on 120–V AC power?

asked by Ashton on September 14, 2014

Imagine that you are a system administrator for a company, and that the company operates from two locations Phoenix and Boston. Phoenix has 350 hosts and Boston has 2100. Given that the following class C IP addresses have been assigned to your company as a

asked by Francesca on September 14, 2011
69. Physics

A steam-electric power plant delivers 900 MW of electric power. The surplus heat is exhausted into a river with a flow of 2.91×105 kg/s, causing a change in temperature of 1.07 oC. A. What is the efficiency of the power plant? B. What is the rate of the

asked by Abbey on April 6, 2016
70. Physics

Using 3 - 4 complete sentences, explain the role of both types of transformers in getting electric energy from an electric power plant (coal-fired, natural gas or nuclear) to our homes.

asked by Alisia on November 30, 2015
71. physics

I'm supposed to design a PV system that could provide an average electric power of 10kW. The average power generation of a solar panel is 20% of the peak power generation. Determine Peak power.

asked by Tim on March 12, 2008
72. physics

What magnitude point charge creates a 13000 N/C electric field at a distance of 0.220 m?

asked by taryn on February 3, 2013
73. Physics

During a brown-out, the electric power company drops the voltage of the power line and the incandescent light bulbs in your house become dimmer. When this happens, the filaments in the bulbs operate at a lower than normal temperature, so a. their color is

asked by Timothy on January 30, 2013
74. Physics

One of the most efficient engines ever built is a coal-fired steam turbine in the Ohio valley, driving an electric generator as it operates between 1870C and 430C. What is itsmaximumtheoretical efficiency?

asked by Tori on January 10, 2011
75. physics - trans. line

A high-voltage transmission line with a resistance of 0.30 /km carries a current of 1040 A. The line is at a potential of 680 kV at the power station and carries the current to a city located 159 km from the station. (a) What is the power loss due to

asked by lo on July 20, 2010
76. math figuire

an electric motor operates at 110 volts and a resistance of 22ohms the ampage is.. A. 4.5 amps B. 4 amps C. 5000 mi D. 4500 mi

asked by jamie on September 27, 2010
77. logic

we thought the answer was 440. 1320/6=220. Then 1320-220=1100. then 1100/5=220. then subtract 1100-220=880 nd so on...does that make sense?

asked by gina on October 16, 2008
78. Mechanics(Ms.Sue)

In a practical machine, the power output is _______ the power input.       A. larger than B. multiplied by C. equal to D. smaller than  D?

asked by Brooklyn on January 15, 2016
79. physics

At a certain location, the solar power per unit area reaching Earth's surface is 200 W/m^2, averaged over a 24-hour day.If the average power requirement in your home is 2.8 kW and you can convert solar power to electric power with 8.0 % efficiency, how

asked by Christy on April 4, 2012
80. physics

At a certain location, the solar power per unit area reaching Earth's surface is 200 W/m^2, averaged over a 24-hour day.If the average power requirement in your home is 2.8 kW and you can convert solar power to electric power with 8.0 % efficiency, how

asked by christy on April 3, 2012
81. algebra

The power P needed to propel a boat is directly proportional to the cube of the speed of the boat. A 100 hp engine is needed to propel a boat at 15 knots. Find the power needed to drive the boat at 20 knots.

asked by Jeremiah on March 10, 2011
82. Physical Science

Hello, I need some help with the folling question... I would say B OR C though I am not sure. Thank You. In a Practical Machine , the power output is _____ the power input . A. Smaller than B.Larger than C.Equal Too D.Multiplied By

asked by Mandi on January 18, 2008
83. Physical Science

What form of energy provides power for a gas stove? That's Chemical Energy, right?

asked by dark1 on February 17, 2014
84. physics

please check these for me: When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? a. it increases b. it decreases c. it remains the same d. it sharply increases, and

asked by physics on March 12, 2009

What other information is needed to prove that the two triangles congruent by SAS? Picture description: there are two triangles showing line LT = line MQ and L=M A.

asked by Sara on November 22, 2016
86. science

can you save money on your electric bill from a regular electric company by choosing to use a percentage of wind power through them? Or does it make your bill higher?

asked by Anonymous on April 10, 2012
87. college

a 200 L electric water heater uses 15 kW of electric power. If the herter is 90% efficient, how long does it take to heat the water in the tank from 16 C to 61 C?

asked by Bill on December 17, 2009
88. Physics

A flat thin non-conducting ring has an inner radius R1 and an outer radius R2 . The disk is uniformly charged with charge per unit area σ(>0) . (a) What is the electric field at the center, P , of the ring? Express your answer in terms of the following

asked by A on February 27, 2013
89. Physics

If the TV draws a 150W of power, the dishwasher 1500 W of power and the computer 100 W of power, will a typical 15 A circuit breaker trip if they operate simultaneously on one line? Explain why. Isn't P= IV and P=I^2R and P- V^2/R So wouldn't that mean

asked by Andrea on April 3, 2008
90. math

In electric circuit theory, the phase angle of "true and real" power is expressed in terms of what function in reference to the apparent power?

asked by reece on August 26, 2015
91. physics

A high-voltage transmission line with a resistance of 0.28 /km carries a current of 1030 A. The line is at a potential of 720 kV at the power station and carries the current to a city located 165 km from the station. (a) What is the power loss due to

asked by lynette on September 17, 2010
92. physics . really need help

An electric iron of 500 W power is used daily for 30 minutes. If the cost per kW.h is \$0.10, what is the weekly expense in using the electric iron??

93. AP Physics 1

If electrical energy costs 12 cents, or \$0.12, per kilowatt-hour, how much does it cost to operate an electric over for 5.0 h if it carries a current of 20.0 A at 220 V?

asked by Akanksha on February 16, 2016
94. Physics

A pot containing 2 liters of 5 celsius water is putt on a stove that is 1500 watts. Now the stove is on. How long time will it take for all of the water to boil from the pot? (turn into vapour). No heat is lost to the surroundings.

asked by Thermodynamics on February 17, 2014
95. science

what happens to the power of an electric circuit if the resistance is decreased?? explain?? i know that as the power increases the resistance decreases why is that?? Power = voltage^2 / resistance. Think again about what you "know". Resistance does not

asked by Megan on March 7, 2007
96. English

Is 'stove' the same as 'gas range'? Do you use the expression 'gas range' which is used for cooking. People put a pan on it to cook. Is 'stove' similar to 'heater' as well?

asked by rfvv on November 6, 2017
97. Physics

The solar radiation incident on the Earth has a power density of approximately 900W/m2. Find the rms value of the electric field. I know that Erms = Emax/squareroot(2) But how can I pass from W/m^2 to electric field?

asked by Waves - AEC on March 10, 2018
98. PHYSICS NEED HELP FAST

A power plant has a power output of 1055 MW and operates with an efficiency of 33.0 percent. Excess energy is carried away as heat from the plant to a nearby river that has a flow rate of 1.1 x 10^6 kg/s. How much energy is transferred as heat to the river

asked by ricki on March 2, 2011
99. Physics

A crane lifts a 200kg load at a steady velocity.It takes 12s to raise the load through 60m. i) What is the power needed to lift the load if there is no friction? ii) What is the power needed if the friction force is constant at 170N?

asked by Hejumacal on October 18, 2015
100. Stats

What happens to the power of the z test, when the standard deviation increases? The deviation from the mean must be larger to obtain the same significance level. I'm not familiar with the term "power" (we don't use that term in physics), but I would guess

asked by Cheri on December 28, 2006