Watts is joules per second, so 50 joules in 5 seconds is 10 watts.
Power (watts) is amperes times voltage, or joules per second. Energy is joules, or watt-seconds. The length of time an electrical load is on is proportional to energy, not power.
Joules measure energy (power x time). If the AC voltage is expressed as rms (root mean square) and not peak, and there are no capacitors or inductors in the circuit, then the joules per second (=power ) will be the same.
You can't. If you know the voltage (volts) and current (amperes), you can convert to power (watts), but power is not energy. Power is the rate of energy (joules per second). You need to know the time as well to determine energy.
To convert BTUs (British Thermal Units) to electrical current, you first need to convert BTUs to energy in joules, as 1 BTU is approximately 1,055 joules. Then, to find the equivalent electrical current, you use the formula ( P = IV ), where ( P ) is power in watts (joules per second), ( I ) is current in amperes, and ( V ) is voltage in volts. By rearranging the formula to ( I = \frac{P}{V} ), you can calculate the current based on the power derived from the BTU conversion and the voltage of your electrical system.
How do you calculate 3ph AC motor power?
To calculate power, divide the work done (10 joules) by the time taken (20 seconds). This gives a power output of 0.5 watts.
Work done (joules) and time taken (seconds) is the information needed to calculate power in watts (joules/second).
To calculate the time it takes to perform 475 Joules of work with 25 watts of power, you use the formula: time = work / power. In this case, time = 475 Joules / 25 watts = 19 seconds. So, it will take 19 seconds to perform 475 Joules of work with 25 watts of power.
The power required to do 60 joules of work in 20 seconds is determined by the formula: Power = Work / Time. Therefore, Power = 60 joules / 20 seconds = 3 watts. So, 3 watts of power is necessary to do 60 joules of work in 20 seconds.
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The work is Work= FD= 40x18= 720 Joules. The power is W/seconds = 720/4= 180 Watts.
To calculate the time it takes to do 278 joules of work with 17 watts, divide the work (278 J) by the power (17 W). This gives you approximately 16.35 seconds. So, it would take about 16.35 seconds to do 278 joules of work with a power of 17 watts.
To calculate the time taken to do 5000 joules of work with a 100-watt machine, you can use the formula: time (seconds) = work (joules) / power (watts). Therefore, the time taken would be 5000 joules / 100 watts, which equals 50 seconds for the machine to complete the work.
Power is calculated by dividing the work done in Joules by the time taken in seconds. So, if x Joules of work are done in 10 seconds, the power used would be x/10 watts.
To calculate the power in watts, simply divide the energy in joules by the time taken to deliver that energy. If 200 joules of energy are delivered in 0.2 seconds during cardioversion, the power would be 200 Joules / 0.2 seconds = 1000 watts.
To find out how much energy is transferred in an hour in joules, you need to know the power consumption of the device in watts. You can calculate the energy transferred by multiplying the power in watts by the time in hours. The formula is Energy (joules) = Power (watts) x Time (seconds).
To calculate the time taken to do 432 joules of work with a power of 75 watts, you would use the formula: time = work / power. Plugging in the values gives you time = 432 Joules / 75 watts = 5.76 seconds.