Answer:This is not the natural frequency of the beam."
Explanation:
Answer:
Option C : 290 J
Explanation:
We can use conservation of energy to estimate the kinetic energy when the object hits the ground:
When the object is at its initial height of 15 meters, it velocity is zero (falls from this position), therefore the total energy it possesses is due to potential energy given by the expression:
Joules
At the moment the object hits the ground from its free fall, its potential energy is zero, while its kinetic energy must equal the rest. So at that moment the object's kinetic energy must be 294 Joules.
Answer:
Energy dissipated = 13.453 Joules
Explanation:
In order to solve this problem, we first compute the gravitational potential energy the child has, and then find the kinetic energy at the lowest position.
The gravitational potential energy (relative to lowest position) is found as follows:
G.P.E = mass * gravity * height
Where, Height = 2 - 2 * Cos(34°)
Height = 0.3193 meters
G.P.E = 30 * 9.8 * 0.3193
G.P.E = 93.874 J
Kinetic energy:
K.E = 0.5 * mass * velocity^2
K.E = 0.5 * 30 * 2.31547^2
K.E = 80.421 J
Energy dissipated = G.P.E - K.E
Energy dissipated = 93.874 - 80.421
<u>Energy dissipated = 13.453 J</u>
<h3><u>Answer;</u></h3>
Smooth muscles
<h3><u>Explanation</u>;</h3>
- Smooth muscles are the muscles that cause blood vessels to dilate and constrict. Smooth muscles forms the supporting tissues of the blood vessels and hollow internal organs such as intestines, bladder, etc.
- Hormones such as vasopressin and Norepinephrine trigger the contraction of smooth muscles and thus constricting the blood vessels.
- When these hormones production is stopped then the smooth muscles will relax and thus dilating the blood vessels.