By the gravity of the earth it is defined by the thermal efficiency
Answer:

Explanation:
the slits spacing, d = 0.21 mm
distance of screen, D = 61 cm
The condition for minima is given as

So, first minima, n = 0

fifth minima, n = 4


For small angle

From the figure:





One thing I think we must put in the capsule is our pictures. Very necessary, so that other inhabitants would see how we look like.
Answer:
(A) She needs to move the decimal point by 3 places