What is the minimum ampere rating of an electric heating sys

Assignment Help Physics
Reference no: EM13244017

To save on heating costs, the owner of a green house keeps 680 kg of water around in barrels. During a winter day, the water is heated by the sun to 11.8 °C. During the night the water freezes into ice at 0.0 °C in nine hours. What is the minimum ampere rating of an electric heating system (240 V) that would provide the same heating effect as the water does? Take the specific heat capacity of water to be 4186 J/(kg·C°), and the latent heat of fusion of water to be 3.35 x 105 J/kg.

Reference no: EM13244017

Questions Cloud

The potential exist for agency conflicts between stockholder : Most business in the U.S. is conducted by corporations, and corporations popularity results primarily from their favorable tax treatment.
Acetic acid and a weak acid : Suppose that one needs 17.65mL of 0.1146M NaOH to titrate 25.00mL of acetic acid, a weak acid, to the equivalent point. Calculate [HAc]
Construct the anova table : Construct the ANOVA table (i.e. compute the between and within SS) and test if there appears to be any differences in means (use α = 0.05)
Relate an example for each of the market structures listed : Explain the most important characteristic in perfect competition, monopolistic competition, oligopoly, and monopolies and relate the characteristic to how these firms can make profits in the short run.
What is the minimum ampere rating of an electric heating sys : To save on heating costs, the owner of a green house keeps 680 kg of water around in barrels. What is the minimum ampere rating of an electric heating system (240 V) that would provide the same heating effect as the water does
Evaluate ka for the acid : 10 M solution of chloroacetic acid, ClCH2CO2H, has a pH of 1.95. calculate Ka for the acid.
Find the probability that the value of p : Let X be the number of individuals in a simple random sample of size 50 from this population who get some relief by taking ibuprofen, and let pˆ be the sample proportion. Find the probability that the value of p is in the interval
Explain how each barrier can foster either monopoly : Analyze the major barriers for entry and exit into the airline industry.
How would you rank the type of shock and why : Suppose that the economy is currently at potential output. Also suppose tht you are an economic policy maker and that a you have been asked to rank if possible, your most preferred to least preferred type of shock: positive demand shock

Reviews

Write a Review

Physics Questions & Answers

  How far apart are they now

A bat in a cave emits a sound pulse and receives an echo 0.22 second later. Assuming that the speed of sound is 339 m/s, how far did the sound (the longitudinal wave) travel during this time.

  What electric field strength is necessary to suspend drop

An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.

  How much pe will the box have at the top

A golf ball strikes a hard, smooth floor at an angle of 30 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impuls..

  How can you determine out µs and µk

A playground merry-go-round has radius 3-{rm m} and moment of inertia 3000-{rm{ kg}} cdot {rm{m}}^2 about a vertical axle through its center, and it turns with negligible friction.

  How much work is done by a man in pushing the mower

A 0.2 object is swung in a vertical circular path on a string 0.1 m long. The acceleration of gravity is 9.8 m/s^2. If a constant speed of 4.07 m/s is maintained, what is hte tension in string when the object is at the top of the circle? Answer in..

  What is the magnitude of the uniform electric field

A coffee filter of mass 1.5 grams dropped from a height of 1 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter.

  Calculate the force of kinetic energy acting on tom

calculate the force of kinetic energy acting on Tom. calculate the distance from the edge of the table where Tom hits the floor.

  What is the charge on a so that the force on b is zero

What is the charge on A so that the force on B is zero.

  What torque is required to the motor

A 24.00 kg child is on a swing that hangs from 1.6-m long chains. What is her highest speed if she swings out to a 45° angle.

  Find the force that a seat in the roller-coaster

A uniform magnetic field of 0.50 T is directed along the positive x axis. A proton moving with the speed of 60 km/s enters this field. The helical path followed by the proton shown has a pitch of 5.0 mm. find the angle between the magnetic field an..

  What minimum power must be supplied to the generator

The moving non-conducting belt of a Van de Graaff generator carries 10 µC of charge up to the metal sphere each second, What minimum power must be supplied to the generator to sustain its operation

  Define the average force exerted on the ball

While a certain rubber band is stretched a distance x, it exerts a restoring force of magnitude F=ax+bx^2, where a and b are constants. The work completed in stretching this rubber band from x=0 to x=L is what.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd