The lower layer is thought to be hard and rough
If it starts at rest the initial velocity is 0.
For an acceleration, a, and time, t, the velocity is v=at. Since at t=4, v=7, then a=7/4=1.75m/s^2
The required work to hold the crate above the ground is 150 joule.
We need to know about the work done to solve this problem. The work done by an object depends on the force applied and the distance. The work is proportional to force and displacement. It can be written as
W = F . s
where W is work done, F is the force and s is displacement
From the question above, the given parameters are
F = 100 N
s = 1.5
Thus, the required work to hold the crate above the ground can be calculated
W = F . s
W = 100 . 1.5
W = 150 joule
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We can’t exactly measure how fast speed is traveling .
Answer:
The longest straw will be 10.328 meters long.
Explanation:
The water will rise up to a height pressure due to which will balance the atmospheric pressure.
We know
Pressure due to water column of height 'h'
Equating both the values we get the value of height 'h' as
