Power = energy/time = 50/5 = 10 watts
50J /10 s =5 W
There are 5 minutes and 50 seconds
1 calorie = 4.1858 joules 1 joule = 0.2389029576186153 calories As an example, convert 5 calories to joules. 1 calorie = 4.1858 joules, therefore 5 calories = 4.1858 x 5 joules = 20.929 joules. So when converting calories to joules, multiply the number of calories by 4.1858 to give you the number of joules.
10 Min's - 5 Min's = 5 Min's - 50 Sec's = 4 Min's 10 Sec's - 15 Sec's = 3 Min's 55 Sec's 3 Minutes and 55 Seconds. ------------------- Interesting math, but the correct answer is still 4 minutes, 25 seconds. Why did you subtract the 15 seconds instead of adding it??
-50.
Watts is joules per second, so 50 joules in 5 seconds is 10 watts.
an electric sander that does 5000 joules of work in 5 seconds
If one were to do one hundred Joules of work in five seconds, he/she would have a power output of 20 Watts.
Watts are a measure of power, Joules are a measure of energy. The energy is equal to the power times the time. So if you have a power of 5 watts running for 7 seconds, that is 5x7 Joules of energy, or 35 Joules. Looked at another way, power measures how fast energy is converted. So 35 Joules converted in 7 seconds would be 5 watts of power, but it would need 35 watts to convert that energy in 1 second.
as power=P=W/t=Fd/t=(10)(10)/10=10Watt
50J /10 s =5 W
B.) 10 Watts
You can't calculate the force from the rate at which work is done.10 joules in 20 seconds could be:-- 1 newton pushing along at 50 centimeters per second, or-- 0.1 newton pushing 5 meters per second, oran infinite number of other possibilities.From the data given in the question, all we know is that the 'power' is 1/2 watt.
Although most of the time power is measured in Watts, it can also be expressed as Js-1. So in your question, you are given the amount of joules and the time in hours. First, convert 5 hours to seconds. There are 60 mins in an hour and 60 seconds in a minute. So that's going to be 5x60x60 = 18000 seconds Now all you do in divide the number of joules by the number of seconds to work out the power. So that's 7500/18000 = 0.41666666666... approximately, 0.42Js-1(2dp) and thats the same as 0.42W (2dp)
A joule is a neuton metre. i.e. 10*5 = 50 joules are required.
There are 5 minutes and 50 seconds
50 meters in 10 seconds is faster. you go 5 meters per second in 50 meters per second, and you go 6 meters a second in 5 seconds..