Answer:
Minimum aperture diameter, B =
Given:
Altitude of airplane, l = 29 Km = 29000 m
width, d = 2.0 m
wavelength,
Solution:
By Reighley criterion, Angle of resolution is given by:
(1)
Also, separation angle or limiting angle, (2)
From eqn (1) and (2):
B = 7.96 mm
False, Because there is some cases where enlarged image needed.
Yes. Your weight is pulling you to center of the world. Weight is a force (gravity).
And since you're still on where you sit, the thing you're sitting on, exerts an equal force to your weight. That's stated in Isaac Newton's third law of motion. Simply 'For every action, there is an equal and opposite reaction.'
The electrons in a piece of metal will leave when the polarized magnesis effect is reppeled and heated up to a certain tempeture.
Answer:
6.03 m/s
Explanation:
<em>Average speed = total distance traveled/total time taken</em>
7 = 450 + 100/total time
total time = 550/7 = 78.57 s
<em>Speed of camel on the bicycle = distance/time</em>
25 = 100/time
time = 100/25 = 4 s
Total time = 78.57 s
Time spent riding bicycle = 4 s
<em>Time spent walking = total time - time spent riding bicycle</em>
= 78.57 - 4 = 74.57 s
<em>Speed of walking = distance walked/time spent walking</em>
= 450/74.57
= 6.03 m/s