Fire extinguishers and fire blankets should be mounted on a surface that is painted ____.
1 answer:
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Answer:
vf = 3.27[m/s]
Explanation:
In order to solve this problem we must analyze each body individually and find the respective equations. The free body diagram of each body (box and bucket) should be made, in the attached image we can see the free body diagrams and the respective equations.
With the first free body diagram, we determine that the tension T should be equal to the product of the mass of the box by the acceleration of this.
With the second free body diagram we determine another equation that relates the tension to the acceleration of the bucket and the mass of the bucket.
Then we equalize the two stress equations and we can clear the acceleration.
a = 3.58 [m/s^2]
As we know that the bucket descends 1.5 [m], this same distance is traveled by the box, as they are connected by the same rope.
And the speed can be calculated as follows:
Answer:
The change in current at is
Explanation:
From the question we are told that
The resistance is
The current is
The change in voltage with respect to time is
The change in resistance with time is
According to ohm's law
differentiating with respect to time using chain rule
substituting value at R = 456