- Show that the equation d=vt2 dimensionally correct or not? ... nalsn7 is waiting for your help. Add your answer and earn points.
Answer:
correct is the A
Explanation:
The light is a wave that has travels from two different places, each side of the circular obstacle, so an interference process must be given, which is described by the expression
a sin θ = m λ
Where a is the size of the slit, λ the wavelength and m an integer that indicates the order of diffraction.
In the case of the central point, the difference in the optical path of each ray stop is zero, which implies that in some it is also zero, so the waves are in phase for this point and a bright spot must be seen in the center.
When reviewing the answer the correct one is the A
A. Triangular
This is not commonly found as a shape in a galaxy
Explanation:
Problem 1.
Initial speed of the runner, u = 0
Acceleration of the runner, 
Time taken, t = 100 s
Let v is the speed of the runner now. Using the first equation of kinematics as :
v = 420 m/s
Problem 2.
Initial speed of the plane, u = 0
Distance covered, d = 300 m
Time taken, t = 25 s
Using the equation of kinematics as :
Problem 3.
A ball free falls from the top of the roof for 5 seconds. Let it will fall at a distance of d. It is given by :
d = 122.5 meters
Let v is the final speed at the end of 5 seconds. Again using first equation of kinematics as :
v = 49 m/s
Hence, this is the required solution.
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Since the force he is applying is 5N and he carries it a distance of 10 meters and the displacement and the force are assumed to be in the same direction we have
5*10 <span>so 50 J </span>
