Answer:
length of column is 140.42 m
Explanation:
in 1 min the soldiers travels 114 steps
so to complete 1 step the time taken by the soldiers =
t =
t =
t = 0.526 s
speed of sound = 343 m/s
length of the column = v × t
= 343 m/s × 0.526 s
= 140.42 m
hence the length of column is 140.42 m
(a) Intensity obeys inverse square law from basis of light passing through a given surface.
(b) Gravitation obeys inverse square law from the basis of force between two masses.
(c) The maximum magnitude of the acceleration of the block is 126.75 m/s².
<h3>What is intensity?</h3>
Intensity is the ratio is ratio of power to area of a given surface.
I = P/A (W/m²)
where;
Intensity and gravitation do not obey inverse square law for same reason;
a = v²/A
a = (3.9²)/0.12
a = 126.75 m/s²
Learn more about acceleration here: brainly.com/question/605631
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Answer:
(a) Distance traveled = 75.3846 m
(b) Velocity of car at that instant will be 14 m/sec
Explanation:
We have given acceleration of the car
Initial velocity of the cart u = 0 m/sec
(a) According to second equation of motion we know that
So distance traveled by car
As the truck is moving with constant speed
So distance traveled by truck
As the truck overtakes the car
So
So distance traveled
(b) From second equation of motion we know that v = u+at
So v = 0+1.3×10.769 = 14 m /sec