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Chacken Wangs
Answer:
a.) magnitude __49.7__ unit(s)
b.) direction __123.6°_ counterclockwise from the +x axis
Explanation:
Let Vector is v
x-component of Vector v = x = -27.5 units (minus sign indicate that x-component is along the minus x-axis )
y-component of Vector v = y = 41.4 units
Magnitude of v = ?
Direction of v = ?
To find the magnitude of the vector
v =
v = 
v = 49.7 units
To find direction
θ = tan⁻¹(y/x)
θ = tan⁻¹(41.4/-27.5)
θ = -56.4°
This Angle is in the clockwise direction with respect to -x axis.
We need to find Angle counterclockwise from the +x axis.
So,
θ = 180° - 56.4°
θ = 123.6°
The given vector is in 2nd quadrant
Explanation:
The law of conservation of energy is one of the fundamental laws of science that helps to understand energy in nature.
Energy is the ability to do work. There are different forms of energy.
Generally, energy is classified into potential and kinetic forms of energy. Potential energy is the energy at rest in a body. It is due to the position of the body.
Kinetic energy is the energy due to the motion of a body.
There are different forms of kinetic and potential energy and they are related by the law of conservation of energy.
The law states that "in an isolated system, energy is neither created nor destroyed by transformed from one form to another".
An isolated system is a system in which there is no exchange of matter and energy.
Due to this we know that no new energy is created or destroyed, they are only transformed from one form to the other.
learn more:
Conservation of matter brainly.com/question/2190120
#learnwithBrainly
Answer:
The problem with her grandfather's eye can be long sightedness and short sightedness
Explanation:
Given that,
Mona's grandfather had been complaining of poor vision for many days.
We know that,
Refractive eye surgery is small surgery.
We need to find the problem with her grandfather's eye
Using given data,
Mona's grandfather had been complaining of poor vision for many days.
So, the doctor did refractive eye surgery of her grandfather's eye.
Due to this surgery, Mona's grandfather can see things clearly.
Refractive eye surgery is a method for correcting vision.
This surgery used for better vision.
This surgery is possible for long sightedness and short sightedness.
Hence, The problem with her grandfather's eye can be long sightedness and short sightedness
