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How many joules of heat does a 100 watt heater produce if it is operated for 5 minutes?
Wiki User
∙ 14y ago
Based on the formula, P = E/T , and 5 min is 300 seconds, 100 = E/300, E = 30000
Wiki User
∙ 14y ago
Anonymous
30000
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How many units of electricity does a 3000w heater use in an hour?
A 3000 W water heater is 3 kW water heater. For 30 minutes of operation it would be 3 kW multiplied by 0.5 hours, or 1.5 kWh. One kWh is equal to 3,600,000 Joules, the water heater uses 1.5 times 3,600,000 J, or 5,400,000 J.
Calculate number of joules in 1kwh?
1 Watt = 1 Joule/second 1 kilowatt = 1000 Watts = 1000 Joules/second 1 hour = 60 minutes = 3600 seconds 1 kWh = 1000 (Joules/second) * 3600 (seconds) = 3,600,000 Joules = 3.6 MJoules
How much work can a 500 watt electric mixer do in 2.50 minutes?
The work or energy in Joules is the power in watts times the number of second it runs for. So 500 watts for 150 seconds is 75,000 Joules.
How long would a 60 watt light bulb have to burn to produce the energy you used climbing the stairs?
If you weigh 70 kg and the stairs are 3 metres high, the energy needed is 70 x 9.8 x 3 Joules or 2058 joules. That would keep a 60 w bulb going for 2058/60 seconds, or 34.3 seconds. But to produce that same energy in a generating plant, the fuel energy wasted in the process would be between 2000 joules for a gas plant of 50% efficiency, and 6000 joules for a coal plant of 25% efficiency.
How many joules are there in 135 calories?
148 calories is 619.6 joules. Since one calorie = 4.18 joules then you multiply that number by 148 and you get 618.64 joules (619 rounded)
What amount of work can a 600 W motor do in 4 minutes?
(600 Watts) x (4 minutes) = (600 joules per second) x (240 seconds) = 144,000 joules =144 kilojoules
How many units of electricity does a 3000w heater use in an hour?
A 3000 W water heater is 3 kW water heater. For 30 minutes of operation it would be 3 kW multiplied by 0.5 hours, or 1.5 kWh. One kWh is equal to 3,600,000 Joules, the water heater uses 1.5 times 3,600,000 J, or 5,400,000 J.
How much power in units of horsepower is generated from 79.3 Joules of work done in 37.2 minutes?
Power = energy/timeWatts = joules/seconds(79.3 joules/37.2 minutes) x (minute/60 seconds) = 0.03553 watt= 35.53 mW = +15.5 dBm (rounded)====================To answer the question:(79.3 joules/37.2 minutes) x (minute/60 seconds) x (horsepower/745.7 watts) = 0.0000476 HP (rounded)47.6 microhorsepower(power output of 47.6 microhorses)
Calculate number of joules in 1kwh?
1 Watt = 1 Joule/second 1 kilowatt = 1000 Watts = 1000 Joules/second 1 hour = 60 minutes = 3600 seconds 1 kWh = 1000 (Joules/second) * 3600 (seconds) = 3,600,000 Joules = 3.6 MJoules
How long will it take to produce 150kw from 780 joules of energy?
If you can stuff the 780 Joules of energy through the system in 0.0052 second,then the power during that time is780/0.0052 = 150,000 watts.But it only lasts for that 5.2 milliseconds, and then you're out of joules.
What is the mechanical efficiency of a machine that produce 400 joules of work output from a work input of 500 joules?
The efficiency is 80%. To find the efficiency, 400/500 = 80%.
How much heat energy will a 40W light bulb give out in 3 minutes?
Joules = watts x seconds. Just convert the minutes to seconds, then multiply.
A bulb has power 40W and it is operated 110Volts. what is the energy produced in one second?
A 40 Watt bulb emits 40 Joules each second. ( the operating voltage is irrelevant )
How many joules are in 56 kilo joules?
56 kilo joules = 56,000 joules
How much work can a 500 watt electric mixer do in 2.50 minutes?
The work or energy in Joules is the power in watts times the number of second it runs for. So 500 watts for 150 seconds is 75,000 Joules.
How do you convert from killi joules to joules?
To convert from kilo joules to joules you have divide by 1000 as 1 kilo joule is equal to 1000 joules. E.g. 2 kilo joules equals 2000 joules.
What force is required to produce an acceleration of 2 m per second square in a body of mass 500 kg?
1000 joules
