Answer:
The extreme difference between the hot chimney and the cold knife makes the chimney expand and contract so quickly it cracks.
Explanation:
Hope this helped!
Answer:
K = 40N/m
Explanation:
According to Hooke’s law
Energy = 1/2 kx^2
K is the spring constant
x = displacement
From the question
Energy =5J
x = 0.5m
K = ?
Using the above formula,
We have
5 = 1/2 x k x (0.5)^2
5 = 1/2 x k x (0.5 x 0.5)
5 = 1/2 x k x 0.25
5 = 0.25k/ 2
Cross multiply
5 x 2 = 0.25k
10 = 0.25k
Divide both sides by 0.25 to get k
10/0.25 = 0.25k/ 0.25
40 = k
K = 40N/m
If im not mistaken it is true
The time of motion of the object at the given speed and distance is 4 seconds.
<h3>Time of motion of the object</h3>
The time of motion of the object is calculated as follows;
t = d/v
where;
- d is distance = 10 m
- v is speed = 2.5 m/s
- t is time of motion
t = 10/2.5
t = 4 s
Thus, the time of motion of the object at the given speed and distance is 4 seconds.
Learn more about time here: brainly.com/question/2854969
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