Answer:
h/(m*c)
Explanation:
Hi!
Lets denote the units of X as [X]
Since the dimentions of h are:
If we divide [h] by the units of mass, we get:
Also we know that:
So:
Therefore
h/(mc) has dimentiosn of length
Answer:
Explanation:
There's a formula for this:
F being force, k being the spring constant, and displacement being the change in x
We are given the force and the spring constant, so this is essentially isolating the Δx term. Do 60N/120N per meter. The newtons cancel out and you get a final answer of Δx = 0.5 meters
Speed = (distance covered) / (time to cover the distance) .
Distance covered = (mark at the end) minus (mark at the beginning)
= (64m - 4m) = 60 meters .
Speed = (60 meters) / (30 seconds) = 2 meters/second .
We don't care about the bridge or the other two elephants.
They don't have any effect on the question or the answer.
Answer:
A practical siphon, operating at typical atmospheric pressures and tube heights, works because gravity pulling down on the taller column of liquid leaves reduced pressure at the top of the siphon (formally, hydrostatic pressure when the liquid is not moving).
I hope it's helpful!
Answer:
Tension upwards
Force downward
Explanation:
Since the weight of the strut is uniform therefore it can be considered as a uniformly distributed load of 400 over a mass-less beam.
According to the given conditions one end of the strut is attached to a hinge and the other is loaded with a sign of 200 N and supported by a cable in the middle of the span of strut as shown in the schematic.
<u>Now, for the equilibrium condition:</u>
Forces are balanced:
i.e.
.....................(1)
Moment about any point is balanced:
<u>Taking moment about the hinge point:</u>
upwards
Now put this value in eq. (1)
i.e. negative sign denotes opposite direction to the presumed one.
downward