00:01
So, hello, let us first consider the answer to question 41.
00:04
So here we have question 41.
00:06
So here it is given that the f here, the force here has a value of 85 newtons, and the time here t equal to 8 .30 seconds.
00:16
And the displacement here s equals 15 meters.
00:21
Now we are asked to find the power in this case.
00:24
So power we know that equals a w divided t, the work turn divided by the time.
00:27
And what turn is equal to f dot s this is f vector dot s divided by t and that equals f s cost 0 degree because in this case the force and the displacement they are in the same direction divided by t so putting all the values of the quantity into the expression we get the value that equals 85 multiplied 155 multiplied 15 divided by t which is 8 .30 seconds and that is coming out to be in this case that is 153 .61 watts so this would be the value of the power in this case the case of question number 41 so power in this case is 153 .61 watts.
01:04
Now let us consider the question number 42.
01:09
So in the question number 42 here also we are asked to find the power.
01:13
So power in this case that equals w divided by t that is worked down by time again.
01:16
So here in this case work done is already given that is 1 .85 multiplied 10 to the power 5 jules divided by 12 that would be the time 12 seconds and that is coming out to be about 1 .5 4 multiplied 10 to the power 4 watts...