Heartburn is a form of indigestion felt as a burning sensation in the chest when stomach acid comes back up into the esophagus.
2 answers:
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Answer:
Δθ = 15747.37 rad.
Explanation:
- The total angular displacement is the sum of three partial displacements: one while accelerating from rest to a certain angular speed, a second one rotating at this same angular speed, and a third one while decelerating to a final angular speed.
- Applying the definition of angular acceleration, we can find the final angular speed for this first part as follows:
- Since the angular acceleration is constant, and the propeller starts from rest, we can use the following kinematic equation in order to find the first angular displacement θ₁:
- Solving for Δθ in (2):
- The second displacement θ₂, (since along it the propeller rotates at a constant angular speed equal to (1), can be found just applying the definition of average angular velocity, as follows:
- Finally we can find the third displacement θ₃, applying the same kinematic equation as in (2), taking into account that the angular initial speed is not zero anymore:
- Replacing by the givens (α, ωf₂) and ω₀₂ from (1) we can solve for Δθ as follows:
- The total angular displacement is just the sum of (3), (4) and (6):
- Δθ = θ₁ + θ₂ + θ₃ = 5044.12 rad + 7252 rad + 3451.25 rad
- ⇒ Δθ = 15747.37 rad.
Answer:
You could use newton’s second law to calculate the force applied to an object if you knew the objects mass and its <u>acceleration.</u>
Explanation:
By, Newtons second law, the force applied on an object directly varies with the acceleration caused and the mass of the object.
This is given by :
Where represents force applied on the object ,
represents mass of the object and
represents the acceleration.
In order to calculate force applied on object we require the mass of the object and its acceleration. The force can be calculated by finding the product of mass and acceleration of the object.