Answer:
33.0 m
Explanation:
We are given that
Wavelength,
Diameter of pupil=d=5.1 mm=
By Rayleigh criteria
Substitute the values
Answer:
-1m
Explanation:
I'm assuming it means that you treat the distance travelled as a displacement vector (distance of a particular direction and magnitude)
If he turns 180 degrees, he is travelling in the exact opposite direction to his original direction of travel. Therefore if he was travelling 5m in one direction, then afer his turn he travels 6m in the exact opposite direction. Opposite directions can be interpreted as the negative of the original direction.
Resultant vectors are the sum of vectors.
The sum of vectors is equal to 5m + - 6m = -1m
Answer:
5 m
35 m
Explanation:
From the formula
s = ut + 1 /2 g t²
u = 0 ; t = 1.
s = 1 / 2 x 10 x 1 = 5 m
In first second distance traveled is 5 m .
Time to travel 80 m is t
80 = 0 + .5 x 10 t²
t = 4s
In last one second
s = u +
= 0 + (2 x4 -1 )x 10 /2 = 35 m .
Motion of a ball thrown by a person upwards and caught after some time is an example of motion in which displacement of the particle is zero but acceleration is not zero in journey.
The displacement of the ball is zero because the starting and end point of the motion are same, i.e, the person's hands.During its motion, the acceleration of ball is constant and non zero called as acceleration due to gravity, g= -9.8 m/s². The velocity of ball is continuously changing. It first decreases during the upward motion of the ball and then increases during the downward journey.The acceleration remains constant and non zero all the time.