Velocity is an object's rate of change (usually over time) of its displacement.
Answer:
The possible frequency of guitar are 842 HZ and 892 HZ.
Explanation:
given the beat frequency = = 25 HZ
we know that beat frequency = difference of frequencies of two instruments
therfore 25 = x-867 or 25 = 867-x
therefore x = 842 or 892
Answer:
Explanation:
Given that
Diameter of laser beam d= 2.4 mm
Radius of laser beam r= 1.2 mm
Power P =1.7 W
We know that intensity(I) of laser beam given as follows
Now by putting the values
So
So the intensity at 1.76 m away from laser