Watt, which is a unit of power, is equal to ____ a) a joule divided by a second b) a joule times a meter c) a joule times a seco
2 answers:
<u>Answer:</u> Watt, a unit of power is equal to a joule divided by a second
<u>Explanation:</u>
Power is defined as the ratio of rate of work done by an object. It is measured in Watt.
Mathematically,
where,
W = work done by the object. It is measured in Joules
t = time taken by the object. It is measured in seconds
So, the unit of watt is equal to a joule divided by a second.
Hence, Watt, a unit of power is equal to a joule divided by a second
You might be interested in
A) 4.7 cm
The formula for the angular spread of the nth-maximum from the central bright fringe for a diffraction from two slits is
where
n is the order of the maximum
is the wavelength
is the distance between the slits
In this problem,
n = 5
So we find
And given the distance of the screen from the slits,
The distance of the 5th bright fringe from the central bright fringe will be given by
B) 8.1 cm
The formula to find the nth-minimum (dark fringe) in a diffraction pattern from double slit is a bit differente from the previous one:
To find the angle corresponding to the 8th dark fringe, we substitute n=8:
And the distance of the 8th dark fringe from the central bright fringe will be given by