Answer:
10miles/second
Explanation:
Change in velocity of the bird is expressed as the difference between the final velocity and initial velocity of the body.
Change in velocity = Final velocity - initial velocity
Since the bird takes off from the tree, the initial velocity of the bird = 0miles/sec
Final velocity = 10miles/secs
Change in velocity = 10-0
Change in velocity = 10miles/second
Answer: 8.33m/s²
Explanation:
Mass of the airplane pilot = 80kg
The speed of plane v = 180km/h = 50m/s
The radius of circle r = 300 m
The acceleration of the plane will be calculated as:
a = v²/r
a = 50²/300
a = 2500/300
a = 8.33m/s²
Note that 180km/h was converted to m/s by
= (180 × 1000)/(60 × 60)
= 180000/3600
= 50m/s
1000 meters = 1 kilometer
60 minutes = 1 hour
60 seconds = 1 minute
3600 seconds = 1 hour
Answer:
The interference pattern from a diffraction grating will have a wide, central bright band with alternate dark and bright bands on both sides, and the interference pattern will have an equally spaced dark and bright band.
Explanation:
In diffraction pattern we know that the distance between two consecutive minimum position is maximum
So here position of minimum is given as
now we have central maximum is of maximum width while all other have width of decreasing order.
While when we use Young's double slit pattern then we can say that position of all maximum and minimum intensity on the screen will be at same distance.
so here we have
so all the maximum and minimum intensity will have equal width.