E = Pt = V2/R *t = (2402 *5*60)/500 = 34,560J
Moraa orina answered the question on April 10, 2018 at 17:46
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Two conductors A and B are such that the cross section area of A is twice that of B and the length of B is...
(Solved)
Two conductors A and B are such that the cross section area of A is twice that of B and the length of B is
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that of B.
Date posted:
April 10, 2018
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Answers (1)
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Calculate the current flowing through a 8 ohms device when it is connected to a 12V supply.
(Solved)
Calculate the current flowing through a 8? device when it is connected to a 12V supply.
Date posted:
April 10, 2018
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Answers (1)
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Find the separation distance between two plates if the capacitance between them is 1.0 * 2-12C and the
enclosed area is 5.0 cm5. Take e0...
(Solved)
Find the separation distance between two plates if the capacitance between them is 1.0 * 2-12C and the
enclosed area is 5.0 cm5. Take ε0 = 6.85 * 2-12Fm-1. { d = 1.425 * 2-4 m}
Date posted:
April 10, 2018
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Answers (1)
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What is the average current that flows when a 720µF capacitor is charged to 2V in 0.03s?
(Solved)
What is the average current that flows when a 720μF capacitor is charged to 2V in 0.03s?
Date posted:
April 10, 2018
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Answers (1)
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In experiment, the diameter of oil patch was 21 cm for an oil drop of radius 0.28 mm. Determine the diameter of oil molecule
(Solved)
In experiment, the diameter of oil patch was 21 cm for an oil drop of radius 0.28 mm. Determine the diameter of oil molecule.
Date posted:
April 10, 2018
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Answers (1)
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State the applications of static charges
(Solved)
State the applications of static charges
Date posted:
April 10, 2018
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Answers (1)
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Explain how lightning arrestors work
(Solved)
Explain how lightning arrestors work.
Date posted:
April 10, 2018
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Answers (1)
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Explain how an electric wind works
(Solved)
Explain how an electric wind works
Date posted:
April 10, 2018
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Answers (1)
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What are the applications of photoemission?
(Solved)
What are the applications of photoemission?
Date posted:
April 10, 2018
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Answers (1)
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If the air temperature and the wet bulb depression are 30 degrees Celcius and 8.5 degrees celcius. What is the wet bulb temperature?
(Solved)
If the air temperature and the wet bulb depression are 30 degrees Celcius and 8.5 degrees celcius. What is the wet bulb temperature?
Date posted:
April 9, 2018
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Answers (1)
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An anemometer 10 m above the ground recorded a wind velocity of 1.5 m/s. What is the estimated wind velocity at 2 m above the...
(Solved)
An anemometer 10 m above the ground recorded a wind velocity of 1.5 m/s. What is the estimated wind velocity at 2 m above the surface?
Date posted:
April 9, 2018
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Answers (1)
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A wheel and axle is used to raise a load of 140N by a force of 20N applied to the brim of the wheel. If...
(Solved)
A wheel and axle is used to raise a load of 140N by a force of 20N applied to the brim of the wheel. If the
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Date posted:
April 9, 2018
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Answers (1)
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. A driving gear having 25teeth engages with a second gear with 20teeth. A third gear with 30 teeth on the
same shaft as the...
(Solved)
A driving gear having 25teeth engages with a second gear with 20teeth. A third gear with 30 teeth on the
same shaft as the second one engages with a fourth gear having 60teeth. Find:
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b) The mechanical advantage of the system if its efficiency is 85%.
Date posted:
April 9, 2018
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Answers (1)
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A man uses an inclined plane to lift a 81kg mass through a vertical height of 1.0m. Given that the angle of
inclination of the...
(Solved)
A man uses an inclined plane to lift a 81kg mass through a vertical height of 1.0m. Given that the angle of
inclination of the plane is 300 and its efficiency is 75%, determine:
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b) The workdone against friction in raising the mass through the height of 1.0m.
Date posted:
April 9, 2018
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Answers (1)
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A machine whose velocity ratio is 8 is used to lift a load of 300N. The effort required is 60N. calculate:
a) The mechanical advantage of...
(Solved)
A machine whose velocity ratio is 8 is used to lift a load of 300N. The effort required is 60N. calculate:
a) The mechanical advantage of the machine.
b) The efficiency of the machine.
Date posted:
April 9, 2018
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Answers (1)
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An effort of 250N raises a load of 900N through 5m in a machine. If the effort moves through 25m, find:
a) The useful workdone in...
(Solved)
An effort of 250N raises a load of 900N through 5m in a machine. If the effort moves through 25m, find:
a) The useful workdone in raising the load.
b) The workdone by the effort.
c) The efficiency of the machine.
Date posted:
April 9, 2018
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Answers (1)
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A machine requires 6000J of energy to lift a mass of 55kg through a vertical distance of 8m. Calculate its efficiency.
(Solved)
A machine requires 6000J of energy to lift a mass of 55kg through a vertical distance of 8m. Calculate its efficiency.
Date posted:
April 9, 2018
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Answers (1)
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A person of mass 60 kg climbs 3 m up a rope in 20 seconds. Find the average power developed by the person.
(Solved)
A person of mass 60 kg climbs 3 m up a rope in 20 seconds. Find the average power developed by the person.
Date posted:
April 9, 2018
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Answers (1)
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A body of mass 12kg is pulled from the rest with a constant force of 25N. The force is applied for 5.0s.
Calculate:
a) The distance...
(Solved)
A body of mass 12kg is pulled from the rest with a constant force of 25N. The force is applied for 5.0s.
Calculate:
a) The distance travelled
b) Workdone on the body.
c) The final kinetic energy of the body.
d) The final velocity of the body.
Date posted:
April 9, 2018
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Answers (1)
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A spring of spring constant 25N/m is stretched such that its length increases from 2cm to 20cm. calculate
the amount of workdone on stretching the...
(Solved)
A spring of spring constant 25N/m is stretched such that its length increases from 2cm to 20cm. calculate
the amount of workdone on stretching the spring.
Date posted:
April 9, 2018
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Answers (1)