Answer:
Option D
670 Kg.m/s
Explanation:
Initial momentum is given by mv=82*5.6=459.2 Kg.m/s (taking eastward as positive)
Final momentum is also mv but v being westward direction, we take it negative
Final momentum=82*-2.5= -205 Kg.m/s
Change in momentum=Final momentum-Initial momentum=-205-459.2=-664.2 Kg.m/s
Impulse=change in momentum=664.2 Kg.m/s rounded off as 670 Kg.m/s
A. Ocean winds bring rain and fog and often bring warm water that keeps the climate mild
The two competing forces that keeps earth orbiting the sun is gravity and inertia
Answer:
9.8 m/s/s, for earth 1.7 N on the Moon.
Explanation:
may i be marked brainliest?
Answer:
5 cm .
Explanation:
Wave length of sonar waves λ = 1390 / 512
= 2.715 m
For waves getting reflected from both layers of the coating , undergoing phase reversal , net change will be zero .
For destructive interference
path diff = ( 2n+1) λ / 2
2μt = ( 2n+1) λ / 2
2 x 13.5 x t = ( 2n+1) λ / 2
for minimum thickness
n = 0
2 x 13.5 x t = λ / 2
2 x 13.5 x t = λ / 2
t = λ / (2 x 27)
= 2.715 / 2 x 27
= .05 m
5 cm .
