It's not in motion when the line straight and flat . there's #9
I cannot see all the questions, what is 18,19 and 21? (:
Answer:
m
Explanation:
= slit width = 0.1 mm = 0.1 x 10⁻³ m
= wavelength of monochromatic light = 500 nm = 500 x 10⁻⁹ m
= Distance of the screen = 10 m
= Spacing between successive minima
Spacing between successive minima is given as

Inserting the values given

m
Answer:
Based on this relationship scenario, as it is known that Ticks aren't capable of drinking water so they require a climate with high humidity to stay hydrated. A climate with high air temperature and low humidity is not ideal. At these condition, a tick can not comfortably survive and this is vice versa.