Answer:
The magnitude of the frictional force is ![F_f \ge 50 \ N](https://tex.z-dn.net/?f=F_f%20%5Cge%2050%20%5C%20N)
Explanation:
From the question we are told that
The force exerted on the box is ![F = 50 \ N](https://tex.z-dn.net/?f=F%20%3D%20%2050%20%5C%20%20N)
Generally for the box to remain at rest then it means that the frictional force is greater than or equal to the force applied to move it i.e
![F_f \ge F](https://tex.z-dn.net/?f=F_f%20%5Cge%20F)
=> ![F_f \ge 50 \ N](https://tex.z-dn.net/?f=F_f%20%5Cge%2050%20%5C%20N)
<span><span>-When sunlight strikes a falling drop of water it is refracted, changed indirection, by the surface of the water.</span>
The light continues into the drop and is reflected from the back of the drop to the front. When the beam hits the front it is refracted again and emerges from the drop as the color spectrum that we see in a rainbow.<span>-The water drop acts like a prism to seperate the light into its different wave lengths.</span></span>
Answer:
The body may be changing its direction due to which velocity get zero because velocity is the distance covered by an object in some time and in a particular direction.
Answer:
order of my age is 8 in seconds.
Explanation:
Suppose my age is 20 years.
Now, as we know that:
1 year has 365 days
1 day has 24 hours
1 hour has 60 minutes
1 minute has 60 seconds.
So my age in seconds will be:
![age=20\times 365\times24\times60\times60](https://tex.z-dn.net/?f=age%3D20%5Ctimes%20365%5Ctimes24%5Ctimes60%5Ctimes60)
![age=6.3072\times 10^{8}\ s](https://tex.z-dn.net/?f=age%3D6.3072%5Ctimes%2010%5E%7B8%7D%5C%20s)
Therefore the order of my age is 8 in seconds.